Its been a while since i used uefn but i just redownloaded it yesterday and for some reason its not connecting to revision control. i dont know what the issue is and how i can solve it
Could you see if the following file(s) are readonly on your machine? They should not be. Right mouse click on them and choose Properties and make sure Read-only is unchecked.
C:\Users\<your username>\Documents\Fortnite Projects\ByonicMap\.urc\urc.sqlite and urc.sqlite-journal
For some reason Unreal Revision Control is not able to write to your database file. It could also be a Windows user / permissions issue.