How can i fix this error?

[12:53:09 ERROR]: Could not pass event PlayerDeathEvent to KS v1.0
org.bukkit.event.EventException: null
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[patched_1.12.2.jar:git-Paper-1618]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.12.2.jar:git-Paper-1618]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.12.2.jar:git-Paper-1618]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[patched_1.12.2.jar:git-Paper-1618]
at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:422) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.EntityPlayer.die(EntityPlayer.java:463) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.EntityLiving.damageEntity(EntityLiving.java:983) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.EntityHuman.damageEntity(EntityHuman.java:773) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.EntityPlayer.damageEntity(EntityPlayer.java:629) ~[patched_1.12.2.jar:git-Paper-1618]
at com.andrei1058.bedwars.support.version.v1_12_R1.v1_12_R1.voidKill(v1_12_R1.java:264) ~[?:?]
at com.andrei1058.bedwars.listeners.DamageDeathMove.onMove(DamageDeathMove.java:557) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor53.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[patched_1.12.2.jar:git-Paper-1618]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.12.2.jar:git-Paper-1618]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.12.2.jar:git-Paper-1618]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:711) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.PacketPlayInFlying.a(SourceFile:126) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.PacketPlayInFlying$PacketPlayInPosition.a(SourceFile:57) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[patched_1.12.2.jar:git-Paper-1618]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_292]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_292]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:850) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774) ~[patched_1.12.2.jar:git-Paper-1618]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666) ~[patched_1.12.2.jar:git-Paper-1618]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292]
Caused by: java.lang.NullPointerException
at eu.icepvp.gabry.KS.PlayerDeathListener.KillSoundPlayer(PlayerDeathListener.java:22) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor425.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[patched_1.12.2.jar:git-Paper-1618]

... 27 more

i know why is here but i don't know how to fix, that plugin is used for generate a sound when a person kill anoother person, but when one person fall in the void, console gave me that error

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@frostoloh What is line 22 of your PlayerDeathListener class? We need your code to help you.