dotnet restore error (Parameter 'password')

# dotnet restore fails

I installed the latest sdk version (dotnet-sdk-3.1.102-win-x64.exe)

When I try to start a new proj I get this error:
```
D:\netcore\demo>dotnet --list-sdks
3.1.102 [C:\Program Files\dotnet\sdk]

D:\netcore\demo>dotnet new console
The template "Console Application" was created successfully.

Processing post-creation actions...
Running 'dotnet restore' on D:\netcore\demo\demo.csproj...
C:\Program Files\dotnet\sdk\3.1.102\NuGet.targets(528,5): error : El valor no puede ser nulo ni una cadena vacía. (Parameter 'password') [D:\netcore\demo\demo.csproj]

Restore failed.
Post action failed.
Description: Restore NuGet packages required by this project.
Manual instructions: Run 'dotnet restore'
```