MSB4184, VS code[Codium], Ubuntu 18.04.3 LTS, ASP.NET Core Projectg

I'm doing a ASP.NET Core project and in VS code problems tab, I get a error:

The expression ""Program.cs".GetPathsOfAllDirectoriesAbove()" cannot be evaluated. System.String.GetPathsOfAllDirectoriesAbove /home/XXXX/XXXX/XXXX/Project/EmployeeManagment.csproj(MSB4184)[60,27]

EmployeeManagment.csproject

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>

</Project>

Using SDK .NET Core SDK (3.1.100)

I try to find any solution in web related to my issue, but no luck.