Expected behaviour
Server crash

Screenshots
https://pastebin.com/WnWBFqmu

ViaVersion Dump
https://dump.viaversion.com/0301e7a3f770d779145b0fe46410d3bffd66a9eb65cd31c31b6c7e640875ca7e

Additional server info
Yes i use Flamecord

Checklist

• I have included a Viaversion dump
• If applicable, I have included a paste (not a screenshot) of the error
• I have tried a build from https://ci.viaversion.com/ and the issue still persists