No corpses spawning + Not getting player interact event

[Relaced]

Describe the bug

1. No corpses spawn at all.
2. keeps saying that it cant get playerinteractevent.

Error

2. [16:59:04 ERROR]: Could not pass event PlayerInteractEvent to GrimReaper v1.8 org.bukkit.event.EventException: null at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[server.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [server.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [server.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:235) [server.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:202) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.BlockPressurePlateWeighted.e(BlockPressurePlateWeighted.java:32) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.BlockPressurePlateAbstract.a(BlockPressurePlateAbstract.java:96) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.BlockPressurePlateAbstract.b(BlockPressurePlateAbstract.java:78) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.WorldServer.a(WorldServer.java:773) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.WorldServer.doTick(WorldServer.java:312) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:801) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [server.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [server.jar:git-Spigot-dcd1643-e60fc34] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242] Caused by: java.lang.NullPointerException at me.codalot.grimreaper.listeners.PlayerListener.onPlayerInteract(PlayerListener.java:83) ~[?:?] at sun.reflect.GeneratedMethodAccessor167.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_242] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_242] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[server.jar:git-Spigot-dcd1643-e60fc34]

To Reproduce Steps to reproduce the behavior:

1. I kill
2. He dies
3. No Corpse Spawn.

Expected behavior To work normally with not spamming errors

Screenshots

1. 

Server (Bukkit/Spigot/PaperSpigot) and Minecraft Version RayCraft.nl Spigot 1.12.2