[11:15:39 ERROR]: Could not pass event EntityDeathEvent to QuantumRPG v4.0.7.100-BETA
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:66) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:573) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityLiving.die(EntityLiving.java:1205) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityZombie.die(EntityZombie.java:542) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityLiving.damageEntity(EntityLiving.java:1055) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityMonster.damageEntity(SourceFile:61) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityZombie.damageEntity(EntityZombie.java:252) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityHuman.attack(EntityHuman.java:1044) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.EntityPlayer.attack(EntityPlayer.java:1349) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1841) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseEntity.a(SourceFile:69) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.PacketPlayInUseEntity.a(SourceFile:13) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:9) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_211]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_211]
        at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:896) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]
Caused by: java.lang.NumberFormatException: For input string: "2.5"
        at java.lang.NumberFormatException.forInputString(Unknown Source) ~[?:1.8.0_211]
        at java.lang.Integer.parseInt(Unknown Source) ~[?:1.8.0_211]
        at java.lang.Integer.parseInt(Unknown Source) ~[?:1.8.0_211]
        at su.nightexpress.quantumrpg.modules.active_items.ActiveItemManager.replaceVars(ActiveItemManager.java:339) ~[?:?]
        at su.nightexpress.quantumrpg.modules.active_items.ActiveItemManager.access$0(ActiveItemManager.java:331) ~[?:?]
        at su.nightexpress.quantumrpg.modules.active_items.ActiveItemManager$ActiveItem.build(ActiveItemManager.java:477) ~[?:?]
        at su.nightexpress.quantumrpg.modules.LeveledItem.create(LeveledItem.java:148) ~[?:?]
        at su.nightexpress.quantumrpg.api.ItemAPI.getItemByModule(ItemAPI.java:1017) ~[?:?]
        at su.nightexpress.quantumrpg.modules.drops.drops2.DropManagerV2.methodRoll(DropManagerV2.java:505) ~[?:?]
        at su.nightexpress.quantumrpg.modules.drops.drops2.DropManagerV2.onDropDeath(DropManagerV2.java:522) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor300.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_211]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:312) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        ... 23 more