Server crash caused by ominous item spawner

Server crashed while ticking ominous item spawner.

Server:Spigot 1.21

Plugins:
AnvilColors-1.0.4
ChatColor2-1.14.3
DiscordSRV-Build-1.27.0
Hat-1.5.0
InvSee++
LaggRemover-2.0.6
LuckPerms-Bukkit-5.4.131
PlaceholderAPI-2.11.6
ProtocolLib
SimpleSit
TAB v4.1.6
Vault