===================== 5/18/2020 7:36:02 PM Recoverable System.AggregateException: Project system data flow 'DataflowBlockSlim (ActionBlockSlimAsync`1 : 29763181)' closed because of an exception: System.AggregateException: One or more errors occurred. ---> System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of inner exception stack trace --- ---> (Inner Exception #0) System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext()<--- . ---> System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex) at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0() at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0() at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 ) --- End of inner exception stack trace --- ---> (Inner Exception #0) System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex) at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0() at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0() at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )<--- =================== 5/18/2020 7:45:10 PM Recoverable System.AggregateException: Project system data flow 'DataflowBlockSlim (ActionBlockSlimAsync`1 : 30961100)' closed because of an exception: System.AggregateException: One or more errors occurred. ---> System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of inner exception stack trace --- ---> (Inner Exception #0) System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext()<--- . ---> System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex) at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0() at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0() at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 ) --- End of inner exception stack trace --- ---> (Inner Exception #0) System.ArgumentException: Must contain activeTargetFramework (Unsupported,Version=v0.0). Parameter name: dependenciesByTargetFramework at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot..ctor(String projectPath, ITargetFramework activeTargetFramework, ImmutableDictionary`2 dependenciesByTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Snapshot.DependenciesSnapshot.SetTargets(ImmutableArray`1 targetFrameworks, ITargetFramework activeTargetFramework) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<>c__DisplayClass38_0.b__2(DependenciesSnapshot previousSnapshot) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.SnapshotUpdater.TryUpdate(Func`2 updateFunc, CancellationToken token) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<b__38_0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.Threading.SemaphoreSlimExtensions.d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Tree.Dependencies.Subscriptions.DependenciesSnapshotProvider.<g__OnActiveConfiguredProjectEvaluatedAsync|30_1>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.DataReceivingBlockSlim`1.d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.CommonProjectSystemTools.Rethrow(Exception ex) at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.b__0() at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.g__action|0() at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )<--- ===================