I'M RUNNING INTO A VERY SERIOUS BUG

I was on a level 15 map, and I crashed when I came out and re-entered, and then I kept crashing when I entered the character

The tips he gave me were: Fatal error in Metadata/Monsters/PorcupineAnt/PorcupineAntLarge@32: Numberof shared states is different on client and server! Delta: 123

me too