The "Modules" page doesn't load
Problem was WSL1, in PowerShell with admin rights wsl -v -l

  NAME            STATE           VERSION
* Ubuntu-18.04    Running         1


Convert your WSL1 installation to WSL2 wsl --set-version Ubuntu-18.04 2

Takes about 10 minutes to finish and needs more than 10GB of free space on the drive for the process.

More at https://scotch.io/bar-talk/trying-the-new-wsl-2-its-fast-windows-subsystem-for-linux