Is this from the newest version? Because I remember having this issue at first and fixing it. But it changes things if it's a new issue.
Yes. This error is from the newest version
Also when trying to save a new level
Wtf, I don't even have that folder.
MyLevels is a folder created by me. But if you save to other folders, the error occurs in the same way.
Oh wait, this is a common issue with mods. Warped has somehow fixed it, but I don't know how.
Okay, try replacing those files with these:
https://mega.nz/file/bb4RRYrZ#StzLWMwCYHeE5YR9vXIWbYfbAHGZcyXRDMB90eBXO_A
https://mega.nz/file/CCRyiS7I#RwdXskHA2JQJ6IgevOGR1vyGJLWEeDB8NO6GkZ2L60Y
The bug related to enemies has disappeared. But when saving the level, the error remained.