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Kindly help on below issue -  System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.) (Object reference not set to an instance of an object.) (Object reference not set to an instance of an object.) ---> System.NullReferenceException: Object reference not set to an instance of an object.   at Mendix.Modeler.WebUI.Forms.Exporter.ExportContext.GetExportID(IDocumentObject documentObject, String subcomponentName) in Mendix.Modeler.WebUI\Forms\Exporter\ExportContext.cs:line 88   at Mendix.Modeler.WebUI.Pages.PageVariable.GetExportId(IExportContext context) in Mendix.Modeler.WebUI\Pages\PageVariable.cs:line 124   at Mendix.Modeler.WebUI.Forms.Actions.ParameterResolutionUtil.WriteParameterResolution[TCallee,TParameter,TMapping](IPageDocumentCall`3 call, JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ParameterResolutionUtil.cs:line 170   at Mendix.Modeler.WebUI.Forms.Actions.ClientAction.WriteProperties(JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ClientAction.cs:line 30   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.<>c__DisplayClass5_0.<Write>b__0(IJsObjectWriter paramWriter) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 32   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 30   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PluginWidget.<>c__DisplayClass34_0.<WriteWidget>b__0(JsonWriter writer) in Mendix.Modeler.WebUI\PluginWidgets\PluginWidget.cs:line 60   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.GetWidgetProperties(Action`1 writeProperties) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 155   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArgument(String parameterName, IEnumerable`1 widgets) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 82   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArguments(IDictionary`2 arguments) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 296   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.<>c__DisplayClass23_0.<Write>b__0() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 186   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.Write() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 177   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_1.<ExportForms>b__2() in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 93   at Mendix.Modeler.Common.ResolveCache.WithCache[T](IProject project, Func`1 action) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 62   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_0.<ExportForms>b__1(IDocument document) in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 81   at Mendix.Modeler.Projects.Changes.ChangedDocumentsProcessor`1.<>c__DisplayClass6_0.<ProcessChangedDocuments>g__DoProcess|2(IDocument document) in Mendix.Modeler.Core\Projects\Changes\ChangedDocumentsProcessor.cs:line 83   at System.Linq.Parallel.ForAllOperator`1.ForAllEnumerator`1.MoveNext(TInput& currentElement, Int32& currentKey)   at System.Linq.Parallel.ForAllSpoolingTask`2.SpoolingWork()   at System.Linq.Parallel.SpoolingTaskBase.Work()   at System.Linq.Parallel.QueryTask.BaseWork(Object unused)   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)--- End of stack trace from previous location ---   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)   --- End of inner exception stack trace ---   at System.Linq.Parallel.QueryTaskGroupState.QueryEnd(Boolean userInitiatedDispose)   at System.Linq.Parallel.SpoolingTask.SpoolForAll[TInputOutput,TIgnoreKey](QueryTaskGroupState groupState, PartitionedStream`2 partitions, TaskScheduler taskScheduler)   at System.Linq.Parallel.MergeExecutor`1.Execute[TKey](PartitionedStream`2 partitions, Boolean ignoreOutput, ParallelMergeOptions options, TaskScheduler taskScheduler, Boolean isOrdered, CancellationState cancellationState, Int32 queryId)   at System.Linq.Parallel.PartitionedStreamMerger`1.Receive[TKey](PartitionedStream`2 partitionedStream)   at System.Linq.Parallel.ForAllOperator`1.WrapPartitionedStream[TKey](PartitionedStream`2 inputStream, IPartitionedStreamRecipient`1 recipient, Boolean preferStriping, QuerySettings settings)   at System.Linq.Parallel.UnaryQueryOperator`2.UnaryQueryOperatorResults.ChildResultsRecipient.Receive[TKey](PartitionedStream`2 inputStream)   at System.Linq.Parallel.ScanQueryOperator`1.ScanEnumerableQueryOperatorResults.GivePartitionedStream(IPartitionedStreamRecipient`1 recipient)   at System.Linq.Parallel.UnaryQueryOperator`2.UnaryQueryOperatorResults.GivePartitionedStream(IPartitionedStreamRecipient`1 recipient)   at System.Linq.Parallel.QueryOperator`1.GetOpenedEnumerator(Nullable`1 mergeOptions, Boolean suppressOrder, Boolean forEffect, QuerySettings querySettings)   at System.Linq.Parallel.ForAllOperator`1.RunSynchronously()   at Mendix.Modeler.Projects.Changes.ChangedDocumentsProcessor`1.ProcessChangedDocuments(IProject project, ProjectChanges projectChanges, Func`2 processDocument) in Mendix.Modeler.Core\Projects\Changes\ChangedDocumentsProcessor.cs:line 75   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.ExportForms(IProject project, Boolean updateRunningProject) in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 62   at Mendix.Modeler.WebUI.Deployment.WebUIDeploymentWorker.ExportPages(IProject project, IProgressInfo info, Boolean updateRunningProject) in Mendix.Modeler.WebUI\Deployment\WebUIDeploymentWorker.cs:line 209   at Mendix.Modeler.WebUI.Deployment.WebUIDeploymentWorker.DoWork(DeploymentPhase phase, IProject project, DeploymentSettings settings, IProgressInfo info) in Mendix.Modeler.WebUI\Deployment\WebUIDeploymentWorker.cs:line 109   at Mendix.Modeler.Deployment.DeploymentProcessBuilder.ExecuteDeploymentWorkForPhase(DeploymentPhase phase, IProject project, DeploymentSettings settings, IProgressInfo info) in Mendix.Modeler.Deployment\DeploymentProcessBuilder.cs:line 191   at Mendix.Modeler.Deployment.DeploymentProcessBuilder.<>c__DisplayClass15_1.<AddBuildStepWithOverride>b__2() in Mendix.Modeler.Deployment\DeploymentProcessBuilder.cs:line 161   at Mendix.Modeler.Projects.ProjectStructureManager.<>c__DisplayClass2_0.<DoWithOverride>b__0() in Mendix.Modeler.Core\Projects\ProjectStructureManager.cs:line 40   at Mendix.Modeler.Projects.ProjectStructureManager.Do[T](IProject projectOverride, Func`1 action) in Mendix.Modeler.Core\Projects\ProjectStructureManager.cs:line 60   at Mendix.Modeler.Projects.ProjectStructureManager.DoWithOverride(IProject projectOverride, Action action) in Mendix.Modeler.Core\Projects\ProjectStructureManager.cs:line 38   at Mendix.Modeler.ProtectedModules.ProtectedModulesUnlocker.ExecuteInContext[T](Boolean unlockImplementation, Func`1 code) in Mendix.Modeler.Core\ProtectedModules\ProtectedModulesUnlocker.cs:line 42   at Mendix.Modeler.ProtectedModules.ProtectedModulesUnlocker.Do(Boolean unlockImplementation, Action action) in Mendix.Modeler.Core\ProtectedModules\ProtectedModulesUnlocker.cs:line 20   at Mendix.Modeler.Deployment.DeploymentProcessBuilder.<>c__DisplayClass15_0.<AddBuildStepWithOverride>b__0(IProgressInfo info) in Mendix.Modeler.Deployment\DeploymentProcessBuilder.cs:line 159   at Mendix.Modeler.Deployment.FileIOExceptionHandlingProcess.CatchDiskException(Action action) in Mendix.Modeler.Deployment\FileIOExceptionHandlingProcess.cs:line 31   at Mendix.Modeler.Deployment.FileIOExceptionHandlingProcess.<>c__DisplayClass2_0.<AddStep>b__0(IProgressInfo info) in Mendix.Modeler.Deployment\FileIOExceptionHandlingProcess.cs:line 22   at Mendix.Modeler.UIFramework.Progress.ProcessRunner.RunStep(IStep step) in Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 169   at Mendix.Modeler.UIFramework.Progress.ProcessRunner.OnDoWork(Object sender, DoWorkEventArgs e) in Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 80   at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)--- End of stack trace from previous location ---   at Mendix.Modeler.UIFramework.Progress.ProcessRunner.Run() in Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 56   at Mendix.Modeler.Deployment.Deployer.RunProcess(IProcess process, String what, Boolean isPackage) in Mendix.Modeler.Deployment\Deployer.cs:line 92 ---> (Inner Exception #1) System.NullReferenceException: Object reference not set to an instance of an object.   at Mendix.Modeler.WebUI.Forms.Exporter.ExportContext.GetExportID(IDocumentObject documentObject, String subcomponentName) in Mendix.Modeler.WebUI\Forms\Exporter\ExportContext.cs:line 88   at Mendix.Modeler.WebUI.Pages.PageVariable.GetExportId(IExportContext context) in Mendix.Modeler.WebUI\Pages\PageVariable.cs:line 124   at Mendix.Modeler.WebUI.Forms.Actions.ParameterResolutionUtil.WriteParameterResolution[TCallee,TParameter,TMapping](IPageDocumentCall`3 call, JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ParameterResolutionUtil.cs:line 170   at Mendix.Modeler.WebUI.Forms.Actions.ClientAction.WriteProperties(JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ClientAction.cs:line 30   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.<>c__DisplayClass5_0.<Write>b__0(IJsObjectWriter paramWriter) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 32   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 30   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteArray(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 41   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PluginWidget.<>c__DisplayClass34_0.<WriteWidget>b__0(JsonWriter writer) in Mendix.Modeler.WebUI\PluginWidgets\PluginWidget.cs:line 60   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.GetWidgetProperties(Action`1 writeProperties) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 155   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArgument(String parameterName, IEnumerable`1 widgets) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 82   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArguments(IDictionary`2 arguments) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 296   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.<>c__DisplayClass23_0.<Write>b__0() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 186   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.Write() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 177   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_1.<ExportForms>b__2() in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 93   at Mendix.Modeler.Common.ResolveCache.WithCache[T](IProject project, Func`1 action) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 62   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_0.<ExportForms>b__1(IDocument document) in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 81   at Mendix.Modeler.Projects.Changes.ChangedDocumentsProcessor`1.<>c__DisplayClass6_0.<ProcessChangedDocuments>g__DoProcess|2(IDocument document) in Mendix.Modeler.Core\Projects\Changes\ChangedDocumentsProcessor.cs:line 83   at System.Linq.Parallel.ForAllOperator`1.ForAllEnumerator`1.MoveNext(TInput& currentElement, Int32& currentKey)   at System.Linq.Parallel.ForAllSpoolingTask`2.SpoolingWork()   at System.Linq.Parallel.SpoolingTaskBase.Work()   at System.Linq.Parallel.QueryTask.BaseWork(Object unused)   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)--- End of stack trace from previous location ---   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)<---  ---> (Inner Exception #2) System.NullReferenceException: Object reference not set to an instance of an object.   at Mendix.Modeler.WebUI.Forms.Exporter.ExportContext.GetExportID(IDocumentObject documentObject, String subcomponentName) in Mendix.Modeler.WebUI\Forms\Exporter\ExportContext.cs:line 88   at Mendix.Modeler.WebUI.Pages.PageVariable.GetExportId(IExportContext context) in Mendix.Modeler.WebUI\Pages\PageVariable.cs:line 124   at Mendix.Modeler.WebUI.Forms.Actions.ParameterResolutionUtil.WriteParameterResolution[TCallee,TParameter,TMapping](IPageDocumentCall`3 call, JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ParameterResolutionUtil.cs:line 170   at Mendix.Modeler.WebUI.Forms.Actions.ClientAction.WriteProperties(JsonWriter writer, IExportContext context) in Mendix.Modeler.WebUI\Forms\Actions\ClientAction.cs:line 30   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.<>c__DisplayClass5_0.<Write>b__0(IJsObjectWriter paramWriter) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 32   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.SelectionValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\SelectionValue.cs:line 30   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteArray(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 41   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PropertyValues.NestedWidgetValue.Write(IJsWriter writer, IExportContext context) in Mendix.Modeler.WebUI\PluginWidgets\PropertyValues\NestedWidgetValue.cs:line 43   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Modeler.WebUI.Export.PluginWidgets.JsAsJsonWriter.WriteObject(Action`1 contentWriter) in Mendix.Modeler.WebUI.Export\PluginWidgets\JsAsJsonWriter.cs:line 34   at Mendix.Common.Util.EnumerableUtil.ForEach[T](IEnumerable`1 source, Action`1 action) in Mendix.Common\Util\EnumerableUtil.cs:line 51   at Mendix.Modeler.WebUI.PluginWidgets.PluginWidget.<>c__DisplayClass34_0.<WriteWidget>b__0(JsonWriter writer) in Mendix.Modeler.WebUI\PluginWidgets\PluginWidget.cs:line 60   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.GetWidgetProperties(Action`1 writeProperties) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 155   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArgument(String parameterName, IEnumerable`1 widgets) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 82   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.WriteArguments(IDictionary`2 arguments) in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 296   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.<>c__DisplayClass23_0.<Write>b__0() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 186   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormWriter.Write() in Mendix.Modeler.WebUI\Forms\Exporter\FormWriter.cs:line 177   at Mendix.Modeler.Common.ResolveCache.TrackResolves(Action code) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 92   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_1.<ExportForms>b__2() in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 93   at Mendix.Modeler.Common.ResolveCache.WithCache[T](IProject project, Func`1 action) in Mendix.Modeler.Core\Common\Problems\ResolveCache.cs:line 62   at Mendix.Modeler.WebUI.Forms.Exporter.FormExporter.<>c__DisplayClass5_0.<ExportForms>b__1(IDocument document) in Mendix.Modeler.WebUI\Forms\Exporter\FormExporter.cs:line 81   at Mendix.Modeler.Projects.Changes.ChangedDocumentsProcessor`1.<>c__DisplayClass6_0.<ProcessChangedDocuments>g__DoProcess|2(IDocument document) in Mendix.Modeler.Core\Projects\Changes\ChangedDocumentsProcessor.cs:line 83   at System.Linq.Parallel.ForAllOperator`1.ForAllEnumerator`1.MoveNext(TInput& currentElement, Int32& currentKey)   at System.Linq.Parallel.ForAllSpoolingTask`2.SpoolingWork()   at System.Linq.Parallel.SpoolingTaskBase.Work()   at System.Linq.Parallel.QueryTask.BaseWork(Object unused)   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)--- End of stack trace from previous location ---   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)<---

asked 2025-07-11

2 answers