Description

When spawning any MythicMobs mob from the default config spams this error.

How to reproduce

Make a server and install following plugins
MythicMobs
Procollib
LibsDisguises
HolographicDisplays

1. Start the server
2. Type /mm mobs spawn SkeletalKnight
3. Wait for about 10-20 seconds for the error to appear

Platform

• Holographic Displays version 2.4.5
• ProtocolLib version v4.6.0-SNAPSHOT-b491
• Spigot 1.16.4 R-0.1 SNAPSHOT

Additional context

Error log:
https://pastebin.com/p0DU37Pu

Duplicate of #388 (keeping the most detailed one)