Two most prominent error messages I get are those:
Failed to load project file 'c:\Forest\Assembly-CSharp.csproj'.
I'll also mention that I changed the omnisharp.path to latest and have installed mono in futile hopes it might help
c:\Users\myusername.vscode\extensions\ms-dotnettools.csharp-1.23.13.omnisharp\1.37.14-beta.3.msbuild\Current\Bin\Microsoft.Common.CurrentVersion.targets(1217,5):
Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
I don't know if it's the core of the problem I'm having but I tried to reinstall the developer package mentioned.
My operating system is Windows 10