the error says"The game crashed whilst exception in server tick loop
Error: java.lang.ArrayIndexOutOfBoundsException: 256"and i removed the mod and when i joined the same world without mods i got in but when i play with mod and join the same world or a new world i keep getting the same error as before i even changed the mods but still the same problem on 1.12.2  and i also tried using mods on 1.14.4 but the same problem please help me fix it