No Build rules for 4.25 - UE4Rules.dll not found

That workaround fixed this issue.
Many thanks!

I also did a mistake, and copied to the wrong folder (MacOSCatalina/Library/ApplicationSupport)
instead of the UserName path. There should also be other folders (in my case 4.23 & 4.24) next to the new 4.25 folder.
Also check the permission (Save&Write for everyone worked for me here) and apply to enclosed items.

Cheers