Minecraft crashes after entering a world?

Play the Minecraft Link Modpack right now. After some time in the Twilight Forest, the game crashed and now I can't enter the world anymore! Here is the crash report:

Thank you for your help!

(to ignore)

Can you create a new world?

So

so you do not publish a crash report that you do about https://pastebin.com or https://hastebin.com/...stebin.com

The mistake seems to be in the world (assumption does not look at the crash report), does another world work?

Yes, other worlds work, but would not like to lose the progress. That's why the question

Yes

In the log is somehow that some mobs have the same UUID or something. Can it be related.