Message: Internal Error - System.ArgumentException: OmniSharp only supports being launched with a directory path or a path to a solution (.sln) file.

[GNSubrahmanyam]

Ubuntu 18.04 Environment docker Client: Monaco-languageclient

csharp Client:   Message: Internal Error - System.ArgumentException: OmniSharp only supports being launched with a directory path or a path to a solution (.sln) file.
Parameter name: path
  at OmniSharp.Services.OmniSharpEnvironment..ctor (System.String path, System.Int32 hostPid, Microsoft.Extensions.Logging.LogLevel logLevel, System.String[] additionalArguments) [0x00062] in <cc784888e5004669a7cdfce6a3d2dba5>:0 
  at OmniSharp.LanguageServerProtocol.LanguageServerHost.CreateCompositionHost (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00048] in <06df7f2c43b54964be79301e33ec66cc>:0 
  at OmniSharp.LanguageServerProtocol.LanguageServerHost.Initialize (OmniSharp.Extensions.LanguageServer.Server.ILanguageServer server, OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00000] in <06df7f2c43b54964be79301e33ec66cc>:0 
  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer+<>c__DisplayClass59_0.<OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle>b__0 (OmniSharp.Extensions.LanguageServer.Server.InitializeDelegate c) [0x00000] in <12a97e97079c4b10a770c2869fa566a9>:0 
  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <59093ef301a24e5a91cb0295fb832cca>:0 
  at System.Threading.Tasks.Task.WhenAll (System.Collections.Generic.IEnumerable`1[T] tasks) [0x000ba] in <a1ae6166591d4020b810288d19af38d4>:0 
  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer.OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams request, System.Threading.CancellationToken token) [0x001a1] in <12a97e97079c4b10a770c2869fa566a9>:0 
  at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, OmniSharp.Extensions.Embedded.MediatR.RequestHandlerDelegate`1[TResponse] next) [0x000e1] in <12a97e97079c4b10a770c2869fa566a9>:0 
  at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1[TDescriptor].RouteRequest (TDescriptor descriptor, OmniSharp.Extensions.JsonRpc.Server.Request request, System.Threading.CancellationToken token) [0x0038a] in <709d80c63bce4fcd8b1071c79413b97b>:0 
  Code: -32602 

[GNSubrahmanyam]

Suddenly i am getting this error

[GNSubrahmanyam]

@filipw Any update on this? As csharp lsp was working fine. Suddenly i am getting this issue. How can i fix it?

[filipw]

it should fall back to current directory if you don't pass the path. looks like you are passing a path that doesn't exist? https://github.com/OmniSharp/omnisharp-roslyn/blob/7f5abf131e286331a51f4554febb43561ea5b663/src/OmniSharp.Host/Services/OmniSharpEnvironment.cs#L22-L39

[GNSubrahmanyam]

@filipw Thanks! I will check my code and get back to you.

[GNSubrahmanyam]

@filipw I am sending workspace path.

[GNSubrahmanyam]

I am using omnisharp-roslyn v1.35.1 and donet core https://dotnet.microsoft.com/download/dotnet-core/3.1 SDK 3.1.202 linux X64

[GNSubrahmanyam]

@filipw Any updates?

[filipw]

looks like the LSP update caused this? https://github.com/OmniSharp/omnisharp-roslyn/pull/1791 maybe @razzmatazz knows more

[filipw]

I think you need to open the bug here https://github.com/OmniSharp/csharp-language-server-protocol/pull/230 it's probably this PR in the csharp-language-server-protocol that broke it

[razzmatazz]

looks like the LSP update caused this? OmniSharp/omnisharp-roslyn#1791 maybe @razzmatazz knows more

@GNSubrahmanyam are you using omnisharp-roslyn built from master branch (from source?)

You mentioned that you are using v1.35.1. Changes from OmniSharp/omnisharp-roslyn#1791 have not been released with v1.35.2 yet (there is no such release ATM)

[GNSubrahmanyam]

@razzmatazz I am using https://github.com/OmniSharp/omnisharp-roslyn/releases/download/v1.35.1/omnisharp.http-linux-x64.tar.gz and https://dotnet.microsoft.com/download/dotnet-core/thank-you/sdk-3.1.202-linux-x64-binaries

Do you want see my docker file?

[razzmatazz]

@GNSubrahmanyam do you have an idea of what could've triggered the change in behaviour? Have you updated your editor by chance?

[GNSubrahmanyam]

Right now i am using.

 "monaco-editor": "^0.20.0",
 "monaco-languageclient": "^0.13.0",

Also i tried with but it is not working

 "monaco-editor": "^0.19.3",
 "monaco-languageclient": "^0.12.0",

logs

{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"clientInfo":{"name":"vscode"},"rootPath":"/workspace/gnsubrahmanyam-54226dbe/Source.cs","rootUri":"file:///workspace/gnsubrahmanyam-54226dbe/Source.cs","capabilities":{"workspace":{"applyEdit":true,"workspaceEdit":{"documentChanges":true,"resourceOperations":["create","rename","delete"],"failureHandling":"textOnlyTransactional"},"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]}},"executeCommand":{"dynamicRegistration":true},"configuration":true,"workspaceFolders":true},"textDocument":{"publishDiagnostics":{"relatedInformation":true,"versionSupport":false,"tagSupport":{"valueSet":[1,2]}},"synchronization":{"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":true,"contextSupport":true,"completionItem":{"snippetSupport":true,"commitCharactersSupport":true,"documentationFormat":["markdown","plaintext"],"deprecatedSupport":true,"preselectSupport":true,"tagSupport":{"valueSet":[1]}},"completionItemKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]}},"hover":{"dynamicRegistration":true,"contentFormat":["markdown","plaintext"]},"signatureHelp":{"dynamicRegistration":true,"signatureInformation":{"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}},"contextSupport":true},"definition":{"dynamicRegistration":true,"linkSupport":true},"references":{"dynamicRegistration":true},"documentHighlight":{"dynamicRegistration":true},"documentSymbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"hierarchicalDocumentSymbolSupport":true},"codeAction":{"dynamicRegistration":true,"isPreferredSupport":true,"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}}},"codeLens":{"dynamicRegistration":true},"formatting":{"dynamicRegistration":true},"rangeFormatting":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"prepareSupport":true},"documentLink":{"dynamicRegistration":true,"tooltipSupport":true},"typeDefinition":{"dynamicRegistration":true,"linkSupport":true},"implementation":{"dynamicRegistration":true,"linkSupport":true},"colorProvider":{"dynamicRegistration":true},"foldingRange":{"dynamicRegistration":true,"rangeLimit":5000,"lineFoldingOnly":true},"declaration":{"dynamicRegistration":true,"linkSupport":true}}},"trace":"off","workspaceFolders":[{"uri":"file:///workspace/gnsubrahmanyam-54226dbe/Source.cs","name":"file:///workspace/gnsubrahmanyam-54226dbe/Source.cs"}]}}

{"jsonrpc":"2.0","method":"window/logMessage","params":{"type":3,"message":"Finding descriptor for initialize"}}

{"jsonrpc":"2.0","method":"window/logMessage","params":{"type":3,"message":"Starting: Routing Request (0) initialize"}}

{"jsonrpc":"2.0","method":"window/logMessage","params":{"type":3,"message":"Converting params for Request (0) initialize to OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams"}}

{"jsonrpc":"2.0","method":"window/logMessage","params":{"type":1,"message":"Failed to handle notification initialize - System.ArgumentException: OmniSharp only supports being launched with a directory path or a path to a solution (.sln) file.\nParameter name: path\n  at OmniSharp.Services.OmniSharpEnvironment..ctor (System.String path, System.Int32 hostPid, Microsoft.Extensions.Logging.LogLevel logLevel, System.String[] additionalArguments) [0x00062] in <af73e6dd2119447d987570341b94877c>:0 \n  at OmniSharp.LanguageServerProtocol.LanguageServerHost.CreateCompositionHost (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00048] in <233112e629fc48e0b2c6db225a6abcb6>:0 \n  at OmniSharp.LanguageServerProtocol.LanguageServerHost.Initialize (OmniSharp.Extensions.LanguageServer.Server.ILanguageServer server, OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00000] in <233112e629fc48e0b2c6db225a6abcb6>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer+<>c__DisplayClass59_0.<OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle>b__0 (OmniSharp.Extensions.LanguageServer.Server.InitializeDelegate c) [0x00000] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <59093ef301a24e5a91cb0295fb832cca>:0 \n  at System.Threading.Tasks.Task.WhenAll (System.Collections.Generic.IEnumerable`1[T] tasks) [0x000ba] in <a1ae6166591d4020b810288d19af38d4>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer.OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams request, System.Threading.CancellationToken token) [0x001a1] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, OmniSharp.Extensions.Embedded.MediatR.RequestHandlerDelegate`1[TResponse] next) [0x000e1] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1[TDescriptor].RouteRequest (TDescriptor descriptor, OmniSharp.Extensions.JsonRpc.Server.Request request, System.Threading.CancellationToken token) [0x0038a] in <709d80c63bce4fcd8b1071c79413b97b>:0 "}}

{"jsonrpc":"2.0","method":"window/logMessage","params":{"type":3,"message":"Finished: Routing Request (0) initialize in 289ms"}}

{"jsonrpc":"2.0","id":"0","error":{"code":-32602,"message":"Internal Error - System.ArgumentException: OmniSharp only supports being launched with a directory path or a path to a solution (.sln) file.\nParameter name: path\n  at OmniSharp.Services.OmniSharpEnvironment..ctor (System.String path, System.Int32 hostPid, Microsoft.Extensions.Logging.LogLevel logLevel, System.String[] additionalArguments) [0x00062] in <af73e6dd2119447d987570341b94877c>:0 \n  at OmniSharp.LanguageServerProtocol.LanguageServerHost.CreateCompositionHost (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00048] in <233112e629fc48e0b2c6db225a6abcb6>:0 \n  at OmniSharp.LanguageServerProtocol.LanguageServerHost.Initialize (OmniSharp.Extensions.LanguageServer.Server.ILanguageServer server, OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00000] in <233112e629fc48e0b2c6db225a6abcb6>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer+<>c__DisplayClass59_0.<OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle>b__0 (OmniSharp.Extensions.LanguageServer.Server.InitializeDelegate c) [0x00000] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <59093ef301a24e5a91cb0295fb832cca>:0 \n  at System.Threading.Tasks.Task.WhenAll (System.Collections.Generic.IEnumerable`1[T] tasks) [0x000ba] in <a1ae6166591d4020b810288d19af38d4>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.LanguageServer.OmniSharp.Extensions.Embedded.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams request, System.Threading.CancellationToken token) [0x001a1] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, OmniSharp.Extensions.Embedded.MediatR.RequestHandlerDelegate`1[TResponse] next) [0x000e1] in <12a97e97079c4b10a770c2869fa566a9>:0 \n  at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1[TDescriptor].RouteRequest (TDescriptor descriptor, OmniSharp.Extensions.JsonRpc.Server.Request request, System.Threading.CancellationToken token) [0x0038a] in <709d80c63bce4fcd8b1071c79413b97b>:0 "}}

{"jsonrpc":"2.0","id":1,"method":"shutdown","params":null}

{"jsonrpc":"2.0","error":{"code":-32002,"message":"Server Not Initialized"}}

[filipw]

ah you are right, I thought we shipped it already 🙈

[GNSubrahmanyam]

I tried with

 "monaco-editor": "^0.19.3",
 "monaco-languageclient": "^0.12.0",

and It's working

FROM node:8.16.0-stretch-slim

# Omnisharp
ENV OMNISHARP_VERSION 1.34.15
RUN curl -L -o omnisharp.tar.gz https://github.com/OmniSharp/omnisharp-roslyn/releases/download/v$OMNISHARP_VERSION/omnisharp-linux-x64.tar.gz
RUN curl -L -o dotnet.tar.gz https://download.visualstudio.microsoft.com/download/pr/43f3a3bd-3df2-41e6-beca-3ec4952ca6c4/30fe7779249607d1bb3bb4b20d61a479/dotnet-sdk-3.0.103-linux-x64.tar.gz
RUN mkdir -p /opt/dotnet && tar -zxf dotnet.tar.gz -C /opt/dotnet
RUN mkdir -p /opt/omnisharp && tar -zxf omnisharp.tar.gz -C /opt/omnisharp

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        libc6 \
        libgcc1 \
        libgssapi-krb5-2 \
        libicu57 \
        liblttng-ust0 \
        libssl1.0.2 \
        libstdc++6 \
        zlib1g \
        ca-certificates \
    && rm -rf /var/lib/apt/lists/*

RUN ln -s /opt/dotnet/dotnet /usr/bin/dotnet
ENV DOTNET_RUNNING_IN_CONTAINER=true \
  NUGET_XMLDOC_MODE=skip \
  DOTNET_USE_POLLING_FILE_WATCHER=true
# Trigger first run experience by running arbitrary cmd to populate local package cache
RUN dotnet help

but it is not working with

 "monaco-editor": "^0.20.0",
 "monaco-languageclient": "^0.13.0",

FROM ubuntu:18.04

# Omnisharp
ENV OMNISHARP_VERSION 1.34.15
RUN curl -L -o omnisharp.tar.gz https://github.com/OmniSharp/omnisharp-roslyn/releases/download/v$OMNISHARP_VERSION/omnisharp-linux-x64.tar.gz
RUN curl -L -o dotnet.tar.gz https://download.visualstudio.microsoft.com/download/pr/43f3a3bd-3df2-41e6-beca-3ec4952ca6c4/30fe7779249607d1bb3bb4b20d61a479/dotnet-sdk-3.0.103-linux-x64.tar.gz

[GNSubrahmanyam]

@razzmatazz @filipw Any update? What would be the reason.

Even i tried this is also not working

FROM ubuntu:18.04

# Omnisharp version
ENV OMNISHARP_VERSION 1.34.9

RUN wget -c https://github.com/OmniSharp/omnisharp-roslyn/releases/download/v$OMNISHARP_VERSION/omnisharp-linux-x64.tar.gz -O omnisharp.tar.gz

RUN wget -c https://download.visualstudio.microsoft.com/download/pr/d731f991-8e68-4c7c-8ea0-fad5605b077a/49497b5420eecbd905158d86d738af64/dotnet-sdk-3.1.100-linux-x64.tar.gz -O dotnet.tar.gz

[GNSubrahmanyam]

@filipw @razzmatazz Whenever client open we dynamically creates workspace under /workspace/workspacename/ in this case it is not working.

How can i initiate workspace dynamically.

[GNSubrahmanyam]

@razzmatazz

i tried doing omnisharp/run -s /workspace/username-projectid/ -lsp

still it is not working. Our production release is blocked because of this.

[filipw]

Moving this issue here, since it seems to be LSP related. Looks like RootUri is null (?)

apparently it works with

 "monaco-editor": "^0.19.3",
 "monaco-languageclient": "^0.12.0",

but not

 "monaco-editor": "^0.20.0",
 "monaco-languageclient": "^0.13.0",

cc @david-driscoll @TylerLeonhardt

[GNSubrahmanyam]

@filipw Also it not working with any editors

i tried doing omnisharp/run -s /workspace/username-projectid/ -lsp

still it is not working. Our production release is blocked because of this.

Whenever client open we dynamically creates workspace under /workspace/workspacename/ in this case it is not working.

How can i initiate workspace dynamically.

[TylerLeonhardt]

That's odd. The PowerShell extension works when RootUri is null. Extensions are the ones that should handle that:

https://github.com/PowerShell/PowerShellEditorServices/blob/master/src/PowerShellEditorServices/Server/PsesLanguageServer.cs#L101-L114

It's usually what happens when you have multiple workspaces or no workspace AFAIK.

[GNSubrahmanyam]

Any updates ? How can i fix it?

[GNSubrahmanyam]

@razzmatazz Any updates?

[GNSubrahmanyam]

still this is not fixed

message: "Failed to handle notification initialize - System.ArgumentException: OmniSharp only supports being launched with a directory path or a path to a solution (.sln) file.↵Parameter name: path↵ at OmniSharp.Services.OmniSharpEnvironment..ctor (System.String path, System.Int32 hostPid, Microsoft.Extensions.Logging.LogLevel logLevel, System.String[] additionalArguments) [0x00062] in <794013c6a6c5442b833dd5811946393a>:0 ↵ at OmniSharp.LanguageServerProtocol.LanguageServerHost.CreateCompositionHost (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00048] in :0 ↵ at OmniSharp.LanguageServerProtocol.LanguageServerHost.Initialize (OmniSharp.Extensions.LanguageServer.Server.ILanguageServer server, OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams initializeParams) [0x00000] in :0 ↵ at OmniSharp.Extensions.LanguageServer.Server.LanguageServer+<>c__DisplayClass55_0.<MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle>b__0 (OmniSharp.Extensions.LanguageServer.Server.InitializeDelegate c) [0x00000] in <72d5c645fd274cab83fd1f12f360a92e>:0 ↵ at System.Linq.Enumerable+SelectListIterator2[TSource,TResult].MoveNext () [0x00048] in <59093ef301a24e5a91cb0295fb832cca>:0 ↵ at System.Threading.Tasks.Task.WhenAll (System.Collections.Generic.IEnumerable1[T] tasks) [0x000ba] in :0 ↵ at OmniSharp.Extensions.LanguageServer.Server.LanguageServer.MediatR.IRequestHandler<OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams,OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeResult>.Handle (OmniSharp.Extensions.LanguageServer.Protocol.Models.InitializeParams request, System.Threading.CancellationToken token) [0x001f4] in <72d5c645fd274cab83fd1f12f360a92e>:0 ↵ at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, MediatR.RequestHandlerDelegate1[TResponse] next) [0x000e1] in <72d5c645fd274cab83fd1f12f360a92e>:0 ↵ at MediatR.Pipeline.RequestPostProcessorBehavior2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, MediatR.RequestHandlerDelegate1[TResponse] next) [0x0007e] in :0 ↵ at MediatR.Pipeline.RequestPreProcessorBehavior2[TRequest,TResponse].Handle (TRequest request, System.Threading.CancellationToken cancellationToken, MediatR.RequestHandlerDelegate1[TResponse] next) [0x0013e] in :0 ↵ at OmniSharp.Extensions.JsonRpc.RequestRouterBase`1[TDescriptor].RouteRequest (TDescriptor descriptor, OmniSharp.Extensions.JsonRpc.Server.Request request, System.Threading.CancellationToken token) [0x00399] in :0 "

Usage:

const lspProcess = { processName: 'csharp', command: '/opt/omnisharp/run', args: ['-s', ${path.resolve(/workspace/${userName}-${uniqueSlug}/)},'-lsp', '-debug'] }

https://github.com/TypeFox/monaco-languageclient/blob/master/example/src/json-server-launcher.ts#L19

const serverConnection = server.createServerProcess(lspProcess.processName, lspProcess.command, lspProcess.args)

[GNSubrahmanyam]

I fixed this issue. Workspace path was wrong. Thanks