Error When Joining Modded LAN World

[EliasX]

My girlfriend is trying to join my LAN world, we both have the same mods and versions.

Whenever she tries to join, she gets to "loading terrain" and then it switches to "saving world" and crashes, giving the following error.

"The game crashed whilst unexpected errorError: java.lang.NullPointerException: Registry Object not present: cofh_core:chilled"

Crash report - Crash log

Any help is appreciated!

[warjort]

Quote

java.lang.NullPointerException: Registry Object not present: cofh_core:chilled

at java.util.Objects.requireNonNull(Objects.java:334) ~[?:?] {re:mixin}

at net.minecraftforge.registries.RegistryObject.get(RegistryObject.java:320) ~[forge-1.18.2-40.2.0-universal.jar%23249!/:?]

Some issue with a missing object not registered properly. The logs/debug.log probably has more information as to why it is missing.

[EliasX]

Problem was Cofh Core mod not present on host client. Removing the mod fixed the issue. Appreciate the help