[22:43:30] [Craft Scheduler Thread - 9/WARN]: [MythicMobs] Plugin MythicMobs v4.5.9-2586 generated an exception while executing task 187
java.util.ConcurrentModificationException: null
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_211]
	at java.util.ArrayList$Itr.next(Unknown Source) ~[?:1.8.0_211]
	at io.lumine.xikage.mythicmobs.mobs.MobManager.lambda$ScanWorld$5(MobManager.java:286) ~[?:?]
	at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
	at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [spigot.jar:git-Spigot-1a3504a-dfa7583]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_211]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_211]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]