I switched the output valve and my client and the server crashed. It was connected to a machine from binnie.

binnie-mods-1.12.2-2.5.0.165.jar
https://hastebin.com/ejazetipos.py

After visiting the code the fault is most likly at binnies.

Yeah this is on binnies, i check for a cap then i get the cap and they return null.

I've made some changes to guard against this.