CreatureSpawnEvent to ItemLoreStats et WorldGuard

Salut !
J'avais aucun problème avec mon serveur, au moment où j'ai mis une zone protégé (pour le spawn par exemple) je me suis retrouver avec des code erreur du genre ci-dessous.
Si quelqu'un aurait la solution ça serait cool, ça plombe tous mes logs sans faire de réelle problème dans le serveur
Merci !

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[09:04:43 ERROR]: Could not pass event CreatureSpawnEvent to ItemLoreStats v7.71
org.bukkit.event.EventException: null
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:309) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callCreatureSpawnEvent(CraftEventFactory.java:441) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.doEntityAddEventCalling(CraftEventFactory.java:378) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.World.addEntity(World.java:902) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.WorldServer.addEntity(WorldServer.java:923) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.SpawnerCreature.a(SpawnerCreature.java:182) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.WorldServer.doTick(WorldServer.java:260) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:951) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:830) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:728) [spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.NoSuchMethodError: com.sk89q.worldguard.bukkit.WorldGuardPlugin.getRegionManager(Lorg/bukkit/WorldLcom/sk89q/worldguard/protection/managers/RegionManager;
at com.github.supavitax.itemlorestats.Util.Util_WorldGuard.entityInLevelRegion(Util_WorldGuard.java:42) ~[?:?]
at com.github.supavitax.itemlorestats.ItemLoreStats$ItemLoreStatsListener.modifyMobHealth(ItemLoreStats.java:1939) ~[?:?]
at sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_201]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_201]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.13.2.jar:git-Spigot-518206a-a5b9c7b]
... 14 more
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Ok, bon bah je vire le plugins alors, merci !