Optifabric makes it impossible for any world to load in Singleplayer and Multiplayer for me. MC Version 1.18.2. I had this issue for a long time, and now I've tried again after I did a factory reset on my pc and it's still not working. If I remove optifabric from the mods folder everything works fine.

Please upload the latest.log just after that issue. I think we can see some stack trace lines, which may help to understand the problem.

I've been having this same issue for a couple of weeks and only tonight found out that optifabric is the problem. glad I'm not the only one, though I don't know any solution