AI of Wolf causing Server errors

Hi, we do use MM MythicMobs-5.7.2 PREMIUM.jar and do have this custom Wolf AI:

Grauwolf:
  Type: WOLF
  Display: '&8Grauwolf'
  Health: 15
  Damage: 7
  Drops:
  #- Drops_Grauwolf
  AIGoalSelectors:
  - 0 clear
  - 1 meleeattack
  - 2 randomstroll
  - 3 float
  AITargetSelectors:
  - 0 clear
  - 1 players
  - 2 otherfaction
  Faction: raubtiere
...

Since we do use this AI, we do encounter these erros in the log sometimes:

java.util.ConcurrentModificationException: null
        at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:1023) ~[?:?]
        at java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:1046) ~[?:?]
        at net.minecraft.world.entity.ai.goal.GoalSelector.tickRunningGoals(GoalSelector.java:151) ~[?:?]
        at net.minecraft.world.entity.Mob.serverAiStep(Mob.java:919) ~[?:?]
        at net.minecraft.world.entity.LivingEntity.aiStep(LivingEntity.java:3417) ~[?:?]
        at net.minecraft.world.entity.Mob.aiStep(Mob.java:676) ~[?:?]
        at net.minecraft.world.entity.AgeableMob.aiStep(AgeableMob.java:155) ~[?:?]
        at net.minecraft.world.entity.animal.Animal.aiStep(Animal.java:63) ~[?:?]
        at net.minecraft.world.entity.animal.Wolf.aiStep(Wolf.java:188) ~[?:?]
        at net.minecraft.world.entity.LivingEntity.tick(LivingEntity.java:3066) ~[?:?]
        at net.minecraft.world.entity.Mob.tick(Mob.java:438) ~[?:?]
        at net.minecraft.world.entity.animal.Wolf.tick(Wolf.java:204) ~[?:?]
        at net.minecraft.server.level.ServerLevel.tickNonPassenger(ServerLevel.java:1409) ~[?:?]
        at net.minecraft.world.level.Level.guardEntityTick(Level.java:1318) ~[?:?]
        at net.minecraft.server.level.ServerLevel.lambda$tick$8(ServerLevel.java:916) ~[?:?]
        at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:42) ~[paper-1.20.4.jar:git-Paper-496]
        at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:896) ~[?:?]
        at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1724) ~[paper-1.20.4.jar:git-Paper-496]
        at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:447) ~[paper-1.20.4.jar:git-Paper-496]
        at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1525) ~[paper-1.20.4.jar:git-Paper-496]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1226) ~[paper-1.20.4.jar:git-Paper-496]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319) ~[paper-1.20.4.jar:git-Paper-496]
        at java.lang.Thread.run(Thread.java:1583) ~[?:?]