Cant Read Output of Generate Project Files

I am getting an error after right-clicking the .uproject and choose GenerateProjectFiles.

The problem is the window automatically closes before I can read it.

How can I generate the Project files by command-line so I can read the error message?

GenerateProjectFiles.bat is no longer in /Engine/Build/Batchfiles ( at least not in 4.15-4.18).

Thanks for any advice/tips