Crash upon right/left clicking my pet.

[nova vapor]

Hi I need help trouble shooting this crash. I downloaded the Otter pet from MCPets wiki, works fine but when I right or left click it, it kicks me off server with message:
DajvickSK lost connection: Internal Exception: java.lang.NoClassDefFoundError: com/destroystokyo/paper/event/player/PlayerUseUnknownEntityEvent

First I thought the issue was in Mythic Mobs, so I removed an ~onInteract skill, but the issue was still present.
Then set to false any click related configurations in MCPets config, but it still crashes.

Any advice will be appreciated. 🙂

[torn girder]

Hi! I think it's a ModelEngine issue

The usual fix is to use paper spigot, or forks of paper spigot

[nova vapor]

Oh that's unfortunate, I will re-install the server, thank you very much for answer.