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Language services stop working partially
VS 17.10.0 P1
It started to happen quite frequently:
https://github.com/dotnet/razor/assets/9047283/d10bd748-7155-4f31-991b-c8cf76a7a705
Syntax highlighting, completion, quick info, all services stop working. While some still for existing text partially.
The file must be closed and reopened to be able to work.
Log is full with the following error:
1:17:10.716 [LSP][LanguageServer.DocumentContextFactory] Tried to create context for document S:/git/app/App.Client.Web/Pages/Create - Copy.razor and project (null) which was not found.
1:17:10.716 [LSP][LanguageServer.RazorRequestContextFactory] Could not create a document context for textDocument/documentColor for file:///S:/git/app/App.Client.Web/Pages/Create - Copy.razor. Endpoint may crash later if it calls GetRequiredDocumentContext.
There is another error which may be related:
1:15:01.981 [CLaSP] [null]
StreamJsonRpc.RemoteInvocationException: The requested line number 514 must be less than the number of lines 1.
Parameter name: Line
at StreamJsonRpc.JsonRpc.<InvokeCoreAsync>d__154`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.Razor.LanguageServer.ClientConnection.<SendRequestAsync>d__3`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.AspNetCore.Razor.LanguageServer.AbstractRazorDelegatingEndpoint`2.<HandleRequestAsync>d__25.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.CommonLanguageServerProtocol.Framework.QueueItem`3.<StartRequestAsync>d__20.MoveNext()
RPC server exception:
StreamJsonRpc.RemoteInvocationException: The requested line number 514 must be less than the number of lines 1.
Parameter name: Line
at StreamJsonRpc.JsonRpc.<InvokeCoreAsync>d__154`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServer.Client.JsonRpcExtensionMethods.<SendMethodRequestWithTelemetryAsync>d__0`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServer.Client.RemoteLanguageClientInstance.<TrackTaskAsync>d__108`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServer.Client.MefClient.<>c__DisplayClass32_0`2.<<SendRequestAsync>g__SendRequestAsyncHelperAsync|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.GetResult(Int16 token)
at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServer.Client.AsyncEnumerableExtensions.<<UndeferExecutionUpToFirstYieldAsync>g__UnwrapRemainingItemsAsync|2_0>d`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.VisualStudio.LanguageServer.Client.AsyncEnumerableExtensions.<<UndeferExecutionUpToFirstYieldAsync>g__UnwrapRemainingItemsAsync|2_0>d`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.GetResult(Int16 token)
at Microsoft.VisualStudio.LanguageServer.Client.LanguageServiceClient.EnqueuedMessage`2.<GetResponsesAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.VisualStudio.LanguageServer.Client.LanguageServiceClient.EnqueuedMessage`2.<GetResponsesAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.GetResult(Int16 token)
at Microsoft.VisualStudio.LanguageServer.Client.AsyncEnumerableExtensions.<MoveNextWrappedAsync>d__3`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.VisualStudio.LanguageServer.Client.AsyncEnumerableExtensions.<SelectManyAsync>d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.GetResult(Int16 token)
at Microsoft.VisualStudio.LanguageServer.Client.LanguageServiceClientManager.<RequestFromSpecificClientsAsync>d__46`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.VisualStudio.LanguageServer.Client.LanguageServiceClientManager.<RequestFromSpecificClientsAsync>d__46`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.GetResult(Int16 token)
at Microsoft.VisualStudio.LanguageServer.Client.RemoteLanguageServiceBroker.<RequestAsync>d__45.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.VisualStudio.LanguageServer.Client.RemoteLanguageServiceBroker.<RequestAsync>d__45.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServer.ContainedLanguage.DefaultLSPRequestInvoker.<ReinvokeRequestOnServerAsync>d__9`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.LanguageServerClient.Razor.RazorCustomMessageTarget.<DelegateTextDocumentPositionAndProjectContextAsync>d__46`1.MoveNext()
Also reported at https://developercommunity.visualstudio.com/t/Syntax-highlighting-broken-in-Razor-page/10613045
Managed to reproduce this, and have been scouring through the logs. Seems like a combination of copying a file, pasting it (and having VS automatically open it) and then renaming it, triggers the issue. Guessing a race condition where we're not having two "new" documents in quick succession (one for the copy, one for the newly named file).
Copy file, rename also does trigger this error: 1 Start VS 2 Go to the solution explorer 3 Right-click / copy a .razor page 4 Paste 5 Change the name of the razor file 6 Edit the new file --> Syntax highlighting broken
Interestingly this only repros for me if I copy and paste the file with the mouse. Mainly noting this down for future reference so I don't go mad trying to reproduce it again in future, like I did this morning :)