Mine Cells 2nd Area Crash then Saving World

[VenMedina]

Describe the Bug

First level of mine cell the prison quarters is working fine no crash but when i enter next portal map, sorry i didn't get the name of the next area. it crashes and save world always.

Reproduction Steps

1. I enter mine cells i cleared all area of prison quarter without issue.
2. When i enter next portal, didn't get the area name. It crashes and Save world immediately even when join world again.

Screenshots and Videos

Crash Report or Log

https://pasta.llaun.ch/njjdfv31

Operating System

Windows 10 Pro

Minecraft Version

1.20

Modloader

Fabric

Modpack Version

Medieval MC [FABRIC] 1.20.1 v23.5

Optifine

No

Other Mods

none

[muon-rw]

Your log is not viewable - please use pastebin or https://mclo.gs/

[Gonza-]

I have the same problem. Here is my log

https://mclo.gs/pN9D8k3

[SHXRKIEgg]

You are on Fabric Loader 0.15.0 which is not what we push the modpack with, so either you modified it or the server host is hosting it wrong