Issue description

The game crashed when I tried to join a world I already joined multiple times before, with this same version of SecurityCraft

Steps to reproduce

1. Have the latest 1.21 version of the mod
2. Joining a world

Minecraft version

1.21

Forge/NeoForge version

21.0.66

SecurityCraft version

v1.9.10-beta4

Other relevant versions

(the mod's version is actually 1.9.10-beta6

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

https://pastebin.com/bjEWqDHB

Thank you! Today's new NeoForge releases broke the mod, and I was actually already updating it but didn't have time to release a fixed version. It'll be released tomorrow at the latest. NeoForge builds 21.0.65-beta and below should still work.

Okay, thank you!