I can confirm that re-installing the engine in a path without SPACES fixes this. Tested in 5.1.
In my case I changed from:
C:\Program Files\Epic Games\UE_5.1
To:
C:\Dev\Engines\UE_5.1
I can confirm that re-installing the engine in a path without SPACES fixes this. Tested in 5.1.
In my case I changed from:
C:\Program Files\Epic Games\UE_5.1
To:
C:\Dev\Engines\UE_5.1