project load error

Hello dear community,
I’m new to all this and have been working on my map for almost 18 hours a day for 4 weeks now. I haven’t had any errors so far. Unfortunately something happened with uefn since the update on the 2nd of november. when i start my map there are a lot of errors, from sounds or the npcs to vfx etc . I enclose screenshots and hope that someone can help me. it would be a pity if all the work would have been in vain.

I have not used any verse codes!

Yesterday after the update I tested the map once because it shows the errors when loading but otherwise performed quite well on the pc. I play myself on the xbox series x and there I test the maps extensively. on the pc I only build them. on the xbox the lag is so enormous since the update that you can’t test the map it’s a jerk without end ;(

Greeting from Germany