Error info about steal mechanic

java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
[14:56:41 WARN]:        at MythicMobsExtension-MC-1.20.4-v1.755-SNAPSHOT.jar//com.gmail.berndivader.mythicmobsext.thiefs.StealMechanic.castAtEntity(StealMechanic.java:69)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.lambda$executeTargetedEntitySkill$8(SkillMechanic.java:578)
[14:56:41 WARN]:        at java.base/java.lang.Iterable.forEach(Iterable.java:75)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.executeTargetedEntitySkill(SkillMechanic.java:574)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.lambda$executeSkills$4(SkillMechanic.java:530)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.Delegates$RunnableToSupplier.get(Delegates.java:121)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.promise.LuminePromise$SupplyRunnable.run(LuminePromise.java:654)
[14:56:41 WARN]:        at MythicMobs-5.6.1-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.tasks.LumineExecutors$SchedulerWrappedRunnable.run(LumineExecutors.java:70)
[14:56:41 WARN]:        at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftTask.run(CraftTask.java:101)
[14:56:41 WARN]:        at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:482)
[14:56:41 WARN]:        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1636)
[14:56:41 WARN]:        at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:447)
[14:56:41 WARN]:        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1515)
[14:56:41 WARN]:        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1216)
[14:56:41 WARN]:        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319)
[14:56:41 WARN]:        at java.base/java.lang.Thread.run(Thread.java:833)