[ERROR] Could not pass event McRPGPlayerLevelChangeEvent to McRPG v1.1.3-ALPHA

java.lang.IllegalArgumentException: bound must be positive

at java.util.Random.nextInt(Random.java:388) ~[?:1.8.0_192]

at us.eunoians.mcrpg.events.mcrpg.McRPGPlayerLevelChange.levelChange(McRPGPlayerLevelChange.java:60) ~[?:?]

at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor767.execute(Unknown Source) ~[?:?]

at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:67) ~[patched_1.13.2.jar:git-Paper-553]

at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[patched_1.13.2.jar:git-Paper-553]

at us.eunoians.mcrpg.skills.Skill.giveExp(Skill.java:154) ~[?:?]

at us.eunoians.mcrpg.events.vanilla.VanillaDamageEvent.damageEvent(VanillaDamageEvent.java:506) ~[?:?]

at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor768.execute(Unknown Source) ~[?:?]

at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:67) ~[patched_1.13.2.jar:git-Paper-553]

at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callEvent(CraftEventFactory.java:104) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:834) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:733) ~[patched_1.13.2.jar:git-Paper-553]

at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:866) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityLiving.damageEntity0(EntityLiving.java:1520) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityLiving.damageEntity(EntityLiving.java:993) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityMonster.damageEntity(EntityMonster.java:44) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityZombie.damageEntity(EntityZombie.java:276) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityHuman.attack(EntityHuman.java:1082) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.EntityPlayer.attack(EntityPlayer.java:1440) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:2026) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:49) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:6) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:15) ~[patched_1.13.2.jar:git-Paper-553]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_192]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_192]

at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:108) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1011) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:938) ~[patched_1.13.2.jar:git-Paper-553]

at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:836) ~[patched_1.13.2.jar:git-Paper-553]

at java.lang.Thread.run(Thread.java:748) [?:1.8.0_192]