VSCode: Extension host terminated unexpectedly when opening .net framework project on mac

I have been editing .net framework projects on my mac with VSCode with C# extension.

But today I encountered this error and it is causing all other extensions to fail as well.

```
ERR Cannot read property 'data' of null: TypeError: Cannot read property 'data' of null
at t.RazorLanguageServiceClient. (/Users/roywong/.vscode/extensions/ms-dotnettools.csharp-1.23.2/dist/extension.js:36:371582)
at Generator.next ()
```

It didn't crash for C# extension: 1.23.1.

**Currently on:**
VSCode: 1.49.0
C# extension: 1.23.2