Won't launch after changed version

So I was gonna setup a dedicated server, By downloading the github files from UE4. I was running “Setup.bat”, Then the secound bat. After it I opened the UE4 visual studio file and let it install the files and more to it got “ready”.
After that was done I closed everything up, Right clicked on my project, Changed version from 4.22 to something c++ stuff I can’t either renember xd, When it was done i opened it and got an instant error saying: Failed to launch editor. Then when hitting ok is getting closed.

And I really need that type of version to setup my dedicated server so is pretty importent for me. And changing back to 4.22 helping bu then I can’t set eveything up.

Any know of solution please comment, Cus evey tips would be a big help.