Problems running F# code in VS Code under CentOS 7

I use a code that works flawlessly on Windows. Also, two programs I tried and I got the same error.

When I click F5 to run my program, I get

 command 'csharp.coreclrAdapterExecutableCommand' not found

I did install .net core runtime and .net core sdk, both the 3.1 version.

I also installed the ionide-fsharp plugin.

What else do I need to make this work?