The Issue

Whenever a player goes near a certain chunk/certain chunks, the server freezes and then crashes due to time out.
The server also has errors around the time the server starts to freeze:

"POI data mismatch: never registered at BlockPos{x=-586, y=-13, z=-1188}"
"POI data mismatch: never registered at BlockPos{x=-467, y=-40, z=-1155}"

Mods Added

We added the following mods:

stylecolonies-1.0.3.jar
toms_storage-1.19-1.5.9.jar
sliceanddice-forge-2.3.1.jar
Towns-and-Towers-v.1.10-FORGE-1.19.2.jar
twigs-forge-1.19.2-3.0.1.jar
irons_spellbooks-1.19.2-1.2.1.jar
useful_railroads-1.19.2-1.5.1.47.jar
L_Enders_Cataclysm-1.29-1.19.2.jar
citadel-2.1.4-1.19.jar
u_team_core-1.19.2-4.4.3.260.jar
player-animation-lib-forge-1.0.2.jar

We also updated Minecolonies to a newer Version:

minecolonies-1.19.2-1.1.112-BETA.jar

Crash Logs

Here are our latest 2 crash logs:

crash-2023-09-03_17.52.28-server.txt
crash-2023-09-03_18.01.57-server.txt

Solutions

It would be great to hear what is causing this issue, so we can try and fix it or remove the mod that is causing this issue (or even try and generating a new overworld).

We made a very temporary solution by walling off the area with bedrock that is causing the server to time out, but this issue could potentially occur somewhere else in the world.

Thank you very much for your quick response! We will disable that mod for now and hope that fixes the issue. Have a nice day!

Looks like Nomowanderer (wandering trader blocker sign mod) is causing these crashes,
Related issues on Dev's Github J-Dill/NoMoWanderer#15, J-Dill/NoMoWanderer#16

Hey all, I have been looking into this for a while and my current thought is that there is a mod in ATM that creates a structure containing a ton of Wandering Traders. My mod then does some rather intense logic for each trader that is spawned as part of the structure.

@Mitchell5200 Are you aware of any mods in ATM that add any structures that contain many Wandering Traders?