[omnisharp-plugin] Rename symbol doesn't work

[svor]

Describe the bug

Rename symbol feature doesn't work in omnisharp-plugin. After trying to rename some symbol I see an error in the browser console:

Exception

Uncaught (in promise) Error: Internal Error - System.ArgumentNullException: Value cannot be null.
Parameter name: source
  at System.Linq.Enumerable.Select[TSource,TResult] (/dashboard/System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] selector) [0x0000d] in <e32d3889c5e24db788c761b532f9d8a8>:0 
  at OmniSharp.LanguageServerProtocol.Handlers.RenameHandler+<>c.<Handle>b__5_1 (/dashboard/OmniSharp.Models.ModifiedFileResponse x) [0x00006] in <dd2ec58840214a8f8e50adfb6905d0fe>:0 
  at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement] (/dashboard/System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] keySelector, System.Func`2[T,TResult] elementSelector, System.Collections.Generic.IEqualityComparer`1[T] comparer) [0x00095] in <e32d3889c5e24db788c761b532f9d8a8>:0 
  at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement] (/dashboard/System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] keySelector, System.Func`2[T,TResult] elementSelector) [0x00000] in <e32d3889c5e24db788c761b532f9d8a8>:0 
  at OmniSharp.LanguageServerProtocol.Handlers.RenameHandler.Handle (/dashboard/OmniSharp.Extensions.LanguageServer.Protocol.Models.RenameParams request, System.Threading.CancellationToken token) [0x00109] in <dd2ec58840214a8f8e50adfb6905d0fe>:0 
  at OmniSharp.Extensions.LanguageServer.Server.Pipelines.ResolveCommandPipeline`2[TRequest,TResponse].Handle (/dashboard/TRequest request, System.Threading.CancellationToken cancellationToken, OmniSharp.Extensions.Embedded.MediatR.RequestHandlerDelegate`1[TResponse] next) [0x000e1] in <cdcdd2bceac34772b5fb2962192e6b77>:0 
  at OmniSharp.Extensions.LanguageServer.Server.LspRequestRouter.RouteRequest (/dashboard/OmniSharp.Extensions.JsonRpc.IHandlerDescriptor descriptor, OmniSharp.Extensions.JsonRpc.Server.Request request) [0x002e2] in <cdcdd2bceac34772b5fb2962192e6b77>:0

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

You can follow steps in the video: https://youtu.be/Zkm513MgBl8

[svor]

should be fixed by eclipse-che/che-plugin-registry#199

[svor]

fixed by eclipse-che/che-plugin-registry#199