[10:28:26 ERROR]: Could not pass event EntityDeathEvent to Quests v4.0.0-rc.3-b182
java.lang.IndexOutOfBoundsException: Index: -1, Size: 0
        at java.util.LinkedList.checkElementIndex(LinkedList.java:559) ~[?:?]
        at java.util.LinkedList.get(LinkedList.java:480) ~[?:?]
        at me.blackvein.quests.Quester.killMob(Quester.java:2181) ~[?:?]
        at me.blackvein.quests.listeners.PlayerListener.preKillMob(PlayerListener.java:629) ~[?:?]
        at me.blackvein.quests.listeners.PlayerListener.onEntityDeath(PlayerListener.java:584) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor749.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.3.jar:git-Paper-196]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.3.jar:git-Paper-196]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.3.jar:git-Paper-196]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[patched_1.16.3.jar:git-Paper-196]
        at org.bukkit.craftbukkit.v1_16_R2.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:801) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.EntityLiving.d(EntityLiving.java:1491) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.EntityLiving.die(EntityLiving.java:1420) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.EntityLiving.damageEntity(EntityLiving.java:1262) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.EntityHuman.attack(EntityHuman.java:1087) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.EntityPlayer.attack(EntityPlayer.java:1828) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.PlayerConnection.a(PlayerConnection.java:2136) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:49) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:6) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:23) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.TickTask.run(SourceFile:18) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.MinecraftServer.ba(MinecraftServer.java:1135) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.MinecraftServer.executeNext(MinecraftServer.java:1128) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.MinecraftServer.sleepForTick(MinecraftServer.java:1089) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:1003) ~[patched_1.16.3.jar:git-Paper-196]
        at net.minecraft.server.v1_16_R2.MinecraftServer.lambda$a$0(MinecraftServer.java:177) ~[patched_1.16.3.jar:git-Paper-196]
        at java.lang.Thread.run(Thread.java:834) [?:?]