Specifically the error occurs in the Resources.Designer.cs:
Resources.Designer.cs
Error 2 The namespace \'ModulusFE\' already contains a definition for \'Sto
Looks like a bug in VS code's OmniSharp.
Solution for me was to execute command "Restart OmniSharp".
Just do: - ctr shift P - type "Restart OmniSharp" .. hit enter
This fixed it for me.