Industrial Foregoing Version: 1.12.1-225
TeslaCoreLib Version: 1.12.2-1.0.15
Crashlog (If Any): https://paste.gg/p/anonymous/94c25d567f6e43b2b295ff921dfc3cd5

Effectively, this commit introduced a method call to something deeper down in the Minecraft class, which obviously isn't available on the serverside.