I received this crash when pushing my modpack update to the server: https://pastebin.com/dfaXwvWT

The crash does not happen in singleplayer, so it's possible I did something wrong.

Versions:
WirelessCraftingTerminal-1.12.2-3.12.93.jar
AE2WTLib-1.12.2-1.0.30.jar

Well, this morning I did a full reinstall of all my server's files, and it's no longer happening. So I have no idea what the actual issue was, but I'm going assume it was user error, and close this. Apologies for the trouble.