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.
