To Reproduce
Steps to reproduce the crash:

Install the mod (no other mods installed) on the newest forge together with Modern Warfare.
Try to spawn a vehicle
Wait until it crashes 😅

Screenshots

Screenshots might not help with anything for the problem.

Versions (please complete the following information)

Forge: 1.12.2 - 14.23.5.2854
Flan's Mod: 5.5.2

Crash Log
https://paste.md-5.net/egamixeyaf.sql

Additional context
Fresh install on a server, only Modern Warfare addon + FlansMod installed.
Crashes with ticking error, as soon as I spawn a vehicle.