The project is developed by multiple people. A colleague uploaded a new main branch. When I downloaded it, it asked me to input the Author and Email. I filled in my own information, but then it reported the following error. error: System.NullReferenceException: Object reference not set to an instance of an object. at Mendix.Modeler.VersionControl.Git.Services.Repository.GitCliRepositoryProvider.ConfigureLineEndingsSettings(String repository) in Mendix.Modeler.VersionControl.Git\Services\Repository\GitCliRepositoryProvider.cs:line 169 at Mendix.Modeler.VersionControl.Git.Services.Repository.GitRepositoryService.ConfigureLineEndingsSettings(String workingDirectory) in Mendix.Modeler.VersionControl.Git\Services\Repository\GitRepositoryService.cs:line 109 at Mendix.Modeler.VersionControl.Operations.Git.GitCheckoutOperation.FetchAndUpdateConfig(CheckoutRequest request, IVersionControlAnalyticsScope analyticScope) in Mendix.Modeler.VersionControl.Git\Operations\GitCheckoutOperation.cs:line 73 at Mendix.Modeler.VersionControl.Operations.Git.GitCheckoutOperation.Execute(CheckoutRequest request) in Mendix.Modeler.VersionControl.Git\Operations\GitCheckoutOperation.cs:line 57 at Mendix.Modeler.VersionControl.CheckoutProcessManager.Checkout(IRemoteRepository remoteRepository, IGitBranch branchToCheckout, String projectDirectory, IVersionControlManager versionControlManager) in Mendix.Modeler.VersionControl.View\CheckoutProcessManager.cs:line 73 at Mendix.Modeler.ProjectHandling.View.Checkout.ProjectCheckouterUI.<>c__DisplayClass15_0.<RunCheckoutProcess>b__0(IProgressInfo info) in Mendix.Modeler.ProjectHandling.View\Checkout\ProjectCheckouterUI.cs:line 124 at Mendix.Modeler.Utility.Progress.StepBase`1.Run(TProgressInfo info) in Mendix.Modeler.Utility\Progress\Step.cs:line 32 at Mendix.Modeler.Utility.Progress.StepBase`1.Mendix.Modeler.Utility.Progress.IStep.Run(Object progressInfo) in Mendix.Modeler.Utility\Progress\Step.cs:line 37 at Mendix.Modeler.UIFramework.Progress.ProcessRunner.RunStep(IStep step) in Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 172 at Mendix.Modeler.UIFramework.Progress.ProcessRunner.OnDoWork(Object sender, DoWorkEventArgs e) in Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 110 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 86 at Mendix.Modeler.ProjectHandling.View.Checkout.ProjectCheckouterUI.RunCheckoutProcess(IRemoteRepository remoteRepository, IGitBranch branchToCheckout, String projectDirectory) in Mendix.Modeler.ProjectHandling.View\Checkout\ProjectCheckouterUI.cs:line 133 at Mendix.Modeler.ProjectHandling.View.Openers.ProjectOpenerUI.DoOpenProject(OpenAppData openAppData) in Mendix.Modeler.ProjectHandling.View\Openers\ProjectOpenerUI.cs:line 85 at Mendix.Modeler.ProjectHandling.View.Openers.ProjectOpenerUI.OpenSprintrProject(ISprintrProject sprintrProject) in Mendix.Modeler.ProjectHandling.View\Openers\ProjectOpenerUI.cs:line 67 at Mendix.Modeler.ProjectHandling.View.Openers.ProjectOpenerUI.OpenSprintrProject(String sprintrProjectID) in Mendix.Modeler.ProjectHandling.View\Openers\ProjectOpenerUI.cs:line 55 at Mendix.Modeler.ProjectHandling.View.AppSelector.ViewModels.AppSelectorViewModel.OpenSprintrProject(String sprintrProjectId) in Mendix.Modeler.ProjectHandling.View\AppSelector\ViewModels\AppSelectorViewModel.cs:line 288 at Mendix.Modeler.ProjectHandling.View.AppSelector.ViewModels.AppSelectorViewModel.OpenApp(AppViewModel app) in Mendix.Modeler.ProjectHandling.View\AppSelector\ViewModels\AppSelectorViewModel.cs:line 187 at Mendix.Modeler.ProjectHandling.View.AppSelector.Views.AppSelectorControl.<CreateAppGrid>b__16_0(Object sender, MouseEventArgs args) in Mendix.Modeler.ProjectHandling.View\AppSelector\Views\AppSelectorControl.cs:line 257 at Eto.PropertyStore.TriggerEvent[T](Object key, Object sender, T args) at Eto.Forms.Control.OnMouseDoubleClick(MouseEventArgs e) at Eto.Forms.Control.Callback.OnMouseDoubleClick(Control widget, MouseEventArgs e) at Eto.Wpf.Forms.WpfFrameworkElement`3.HandleMouseDown(Object sender, MouseButtonEventArgs e) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
asked
gang chen
2 answers
3
Hello Gang,
You can delete the existing app folder from your local system.
Re-download the project from Version Control-Download from version control
check the studio pro version of branch which you are trying to download.
answered
RAJU PATEL
0
Hi gang chen are able to open the app with different branch line check that once and if not, that is also not opening try to logout your account and login again try to open your app.