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Official C# support for Visual Studio Code
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System.TypeLoadException: Could not load type of field 'McMaster.Extensions.CommandLineUtils.CommandLineApplication:_validationErrorHandler' (36) due to: Could not load file or assembly 'System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. #3537

Open mfgabriel92 opened 4 years ago

mfgabriel92 commented 4 years ago

Issue Description

An error message when OmniSharp initializes on a newly created webapi project.

Steps to Reproduce

Create a webapi project and install OmniSharp

Expected Behavior

To have no error.

Actual Behavior

Error.

Logs

OmniSharp log

Starting OmniSharp server at 1/30/2020, 11:51:34 AM
    Target: /home/gabriel/Workspace/careplus-email-api

OmniSharp server started with Mono 5.18.0.
    Path: /home/gabriel/.vscode/extensions/ms-vscode.csharp-1.21.9/.omnisharp/1.34.9/omnisharp/OmniSharp.exe
    PID: 24986

System.TypeLoadException: Could not load type of field 'McMaster.Extensions.CommandLineUtils.CommandLineApplication:_validationErrorHandler' (36) due to: Could not load file or assembly 'System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
  at OmniSharp.Stdio.StdioCommandLineApplication..ctor () [0x00000] in <27dcabbd1f5d4edeaffe820a1236c676>:0 
  at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_0.<Main>b__0 () [0x00006] in <2d02054c9f224f8aa95299738e820ffb>:0 
  at OmniSharp.HostHelpers.Start (System.Func`1[TResult] action) [0x0001c] in <1ed0cdfb5a5d42889b4f5df087ff7bd6>:0 
[ERROR] Error: OmniSharp server load timed out. Use the 'omnisharp.projectLoadTimeout' setting to override the default delay (one minute).

C# log

I don't know how to do it

Environment information

VSCode version: 1.41.1 C# Extension: 1.21.9 OS: Ubuntu 19.10 64 bits

Mono Information OmniSharp using global mono :5.18.0
Dotnet Information .NET Core SDK (reflecting any global.json): Version: 3.1.101 Commit: b377529961 Runtime Environment: OS Name: ubuntu OS Version: 19.10 OS Platform: Linux RID: ubuntu.19.10-x64 Base Path: /usr/share/dotnet/sdk/3.1.101/ Host (useful for support): Version: 3.1.1 Commit: a1388f194c .NET Core SDKs installed: 3.1.101 [/usr/share/dotnet/sdk] .NET Core runtimes installed: Microsoft.AspNetCore.App 3.1.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 3.1.1 [/usr/share/dotnet/shared/Microsoft.NETCore.App] To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download
Visual Studio Code Extensions |Extension|Author|Version| |---|---|---| |csharp|ms-vscode|1.21.9| |dart-code|Dart-Code|3.7.1| |flutter|Dart-Code|3.7.1| |vscode-great-icons|emmanuelbeziat|2.1.47|;
JoeRobich commented 4 years ago

OmniSharp server started with Mono 5.18.0.

Hi @mfgabriel92, OmniSharp requires Mono 6.6.0 or higher. Can you update to the stable release? https://www.mono-project.com/download/stable/#download-mac

mfgabriel92 commented 4 years ago

Hi @JoeRobich. It solved it. Thanks.

mfgabriel92 commented 4 years ago

Hello,

It happened again, and this time I have version 6.8.0.105.

jpietrzyk commented 4 years ago

Have the same problem, maybe the reason is I've just updated to Ubuntu 20.04 beta, and yeah, it is beta, but will be stable in 10 days. My output:

System.TypeLoadException: Could not load type of field 'McMaster.Extensions.CommandLineUtils.CommandLineApplication:_validationErrorHandler' (36) due to: Could not load file or assembly 'System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
  at OmniSharp.Stdio.StdioCommandLineApplication..ctor () [0x00000] in <0f4d64c713a44cb7b327f623e35918a5>:0 
  at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_0.<Main>b__0 () [0x00006] in <053e8164eb434b63be8247033b33692f>:0 
  at OmniSharp.HostHelpers.Start (System.Func`1[TResult] action) [0x0001c] in <cc784888e5004669a7cdfce6a3d2dba5>:0 
[ERROR] Error: OmniSharp server load timed out. Use the 'omnisharp.projectLoadTimeout' setting to override the default delay (one minute).
konradmb commented 4 years ago

@jpietrzyk Basically, OmniSharp can't load required assemblies. You can try either installing mono-complete package or setting "omnisharp.useGlobalMono": "never" in VSCode settings.

Installing mono-complete is a better way, because you'll get more libraries, newer version etc.

I wonder why loading internal mono isn't the default, especially when OmniSharps ships it inside the extension, and Ubuntu has a stripped down version of mono by default. But it could lead to even more problems…

Semicolon192 commented 4 years ago

@konradmb Yes! sudo apt install mono-complete fixed it for me. Pop!_os 20.04 mono 6.8.0.105