Steps to reproduce:

1. Open Security Desk
2. Add any player, press the ok-button-thing (doesnt matter if they are online or offline, might not even matter what you write in the box)
3. Server crash.

Version (make sure you are on the latest version before reporting):

Forge: 31.1.14
Mekanism: 9.9.10
Other relevant version: All The Mods 5

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

https://pastebin.com/BwR30KVK
https://pastebin.com/7MTamZDh

ah balls, looked trough the issues but didnt notice it. stoke 3 fast 5 me.

#5896