"Server Closed" in singleplayer Minecraft 1.20.1 (Modded)

[thee_vio]

I'm trying to make my own modpack, but sometimes, in certain areas of the world, the game just says "server closed". Minecraft doesn't close, it just returns to the menu. When I tried to figure it out on my own and understand the logs, I didn't understand anything (English is not my native language, so it's difficult for me). I've been trying to solve the problem for the third month. So I ask if anyone is good at this and it's not difficult for you, to help me with this. If you need details, ask. I'll describe everything.

What it looks like

Logs

Edited September 28 by thee_vio

[TileEntity]

Same issue without the mod cupboard?

[thee_vio]

same =(

[TileEntity]

I have no idea - maybe a fabric mod, but just Connector is mentioned

[thee_vio]

removed all fabric mods, didn't help😔

[TileEntity]

I have no idea