Anyone know how to fix this MythicMobs issue?

[Troaxx]

Tried asking in the MM discord but they too also couldn't figure it out. It's a javassist problem but MM doesn't use that.


Prior to this, I added in a plugin 'OldCombatMechanics'. Tried to recreate it on a local server with just MM installed (default config) and then added in the extra plugin. MM works fine there. I noticed this issue only happening with my current MM config but it hasn't been touched in a long time. Also tried switching server jars, tuinity, paper and purpur. All 1.16.5, none seem to fix the issue.

If anyone knows how to fix this it would be great

 

[Troaxx]

VerifyError occurs because the version of the plugin library used by the developer does not match. Can you show me your version of Minecraft and a list of plugins on the server?

I'm using Forge 1.12. https://prnt.sc/13ect5f https://prnt.sc/13ecubu

 

[Troaxx]

Are you using a mod server? The mod server is unlikely to work with MysticMobs.

Nope. The server doesn't have mods on it.

 

[Troaxx]

use spigot

I believe Tuinity is a fork of Spigot/Paper(?)