Getting navigate symbol popup Error

please check this

https://github.com/dotnet/roslyn/issues/20779

 

https://stackoverflow.com/questions/33029127/go-to-definition-cannot-navigate-to-the-symbol-under-the-caret

 

https://developercommunity.visualstudio.com/content/problem/505489/cannot-navigate-to-the-symbol-under-the-caret-3.html 

https://social.msdn.microsoft.com/Forums/en-US/c0eab2bf-e122-481f-8709-18211e6b2a54/cannot-navigate-to-the-symbol-under-the-caret?forum=vsdebug

 

http://stgaup.blogspot.com/2018/01/visual-studio-2017-go-to-definition.html