I always get this error when trying to create an app, I don' know why. Is it necessary to create and set up a githb repository? I'm at my wits end, nothing seems to work when I'm trying to create an app with nline services enabled. System.NullReferenceException: Object reference not set to an instance of an object. at Mendix.Modeler.VersionControl.Git.Services.Repository.GitCliRepositoryProvider.Push(String workingDirectory, String remoteName, String remotePushUrl, IReadOnlyList`1 refSpec) in Mendix.Modeler.VersionControl.Git\Services\Repository\GitCliRepositoryProvider.Remote.cs:line 14 at Mendix.Modeler.VersionControl.Git.Services.Repository.GitRepositoryService.Push(String workingDirectory, Option`1 refSpec) in Mendix.Modeler.VersionControl.Git\Services\Repository\GitRepositoryService.Remote.cs:line 37 at Mendix.Modeler.VersionControl.Actions.GitPushAction.Execute(String workingDirectory, Option`1 refSpec) in Mendix.Modeler.VersionControl.Git\Actions\GitPushAction.cs:line 20 at Mendix.Modeler.VersionControl.Operations.Git.GitPushChangesOperation.Execute(String projectDirectory, String[] branchNames) in Mendix.Modeler.VersionControl.Git\Operations\GitPushChangesOperation.cs:line 37 at Mendix.Modeler.VersionControl.CommitWorker.PushToRepository(IProject project, PushKind pushKind) in Mendix.Modeler.VersionControl.View\Commit\CommitWorker.cs:line 108 at Mendix.Modeler.VersionControl.ProjectUploader.UploadNewProject(IProject project, UploadProjectInfo uploadProjectInfo) in Mendix.Modeler.VersionControl.View\Upload\ProjectUploader.cs:line 78 at Mendix.Modeler.ProjectHandling.View.Uploaders.ProjectUploaderUI.UploadNewProject(IProject project, UploadProjectInfo uploadProjectInfo) in Mendix.Modeler.ProjectHandling.View\Uploaders\ProjectUploaderUI.cs:line 62 at Mendix.Modeler.ProjectHandling.View.Creators.ProjectInitializer.<>c__DisplayClass9_0.<AddUploadToVersionControlServerStep>b__0(IProgressInfo info) in Mendix.Modeler.ProjectHandling.View\Creators\ProjectInitializer.cs:line 120 at Mendix.Modeler.Utility.Progress.StepBase`1.Run(TProgressInfo info) in Mendix.Modeler.Utility\Progress\Step.cs:line 31 at Mendix.Modeler.Utility.Progress.StepBase`1.Mendix.Modeler.Utility.Progress.IStep.Run(Object progressInfo) in Mendix.Modeler.Utility\Progress\Step.cs:line 36 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.ProjectHandling.View.Packages.ProjectPackageImporter.Import(CreateProjectConfig config, ZipFile zipFile, ModelerPackage package, String title, Boolean isNewProject) in Mendix.Modeler.ProjectHandling.View\Packages\ProjectPackageImporter.cs:line 70 at Mendix.Modeler.ProjectHandling.View.Creators.EmptyProjectCreator.CreateEmptyProject(CreateProjectConfig config) in Mendix.Modeler.ProjectHandling.View\Creators\EmptyProjectCreator.cs:line 40 at Mendix.Modeler.ProjectHandling.View.Creators.ProjectCreator.CreateEmptyProject(AppSettings settings) in Mendix.Modeler.ProjectHandling.View\Creators\ProjectCreator.cs:line 71 at Mendix.Modeler.ProjectHandling.View.Creators.ProjectCreator.CreateProject(AppTemplate template, AppSettings settings) in Mendix.Modeler.ProjectHandling.View\Creators\ProjectCreator.cs:line 55 at Mendix.Modeler.ProjectHandling.View.Creators.ProjectCreatorUI.CreateProject(AppTemplate template) in Mendix.Modeler.ProjectHandling.View\Creators\ProjectCreatorUI.cs:line 85 at Mendix.Modeler.Core.View.Dashboard.DashboardTabContent.ImportOrCreateProject(AppTemplate appTemplate, IDialogs dialogs, IProjectOpenerUI projectOpenerUI, IProjectCreatorUI projectCreatorUI) in Mendix.Modeler.Core.View\Dashboard\DashboardTabContent.cs:line 50 at Mendix.Modeler.Core.View.Dashboard.DashboardTabContent.<>c__DisplayClass7_0.<.ctor>b__0(AppTemplate appTemplate) in Mendix.Modeler.Core.View\Dashboard\DashboardTabContent.cs:line 36 at Mendix.Modeler.Core.View.Dashboard.DashboardTabContent.RaiseAppTemplateActivated(AppTemplate appTemplate) in Mendix.Modeler.Core.View\Dashboard\DashboardTabContent.cs:line 61 at Mendix.Modeler.Core.View.Dashboard.DashboardTabContent.DashboardTabContentCallback.OnAppTemplateActivated(DashboardTabContent widget, AppTemplate appTemplate, EventArgs eventArgs) in Mendix.Modeler.Core.View\Dashboard\DashboardTabContent.cs:line 67 at Mendix.Modeler.Core.View.Windows.Dashboard.DashboardTabContentHandler.<CreateControl>b__6_0(AppTemplate appTemplate) in Mendix.Modeler.Core.View.Windows\Dashboard\DashboardTabContentHandler.cs:line 27 at Mendix.Modeler.Core.View.Windows.Dashboard.DashboardControl.ActivateTemplate(AppTemplate appTemplate) in Mendix.Modeler.Core.View.Windows\Dashboard\DashboardControl.xaml.cs:line 34 at Mendix.Modeler.Core.View.Windows.Dashboard.Views.TemplateDetailsView.OnUseThisTemplateClicked(Object sender, RoutedEventArgs e) in Mendix.Modeler.Core.View.Windows\Dashboard\Views\TemplateDetailsView.xaml.cs:line 34 at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(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.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) 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)