Помогите Плагин на кейсы

Менюшка открывается всё нормально, когда я нажимаю открыть кейс ничего не происходит:
В консоле:
[22:27:57 ERROR]: Could not pass event InventoryClickEvent to uCase v1.3
org.bukkit.event.EventException: null
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:72) ~[minecraft_server.jar:git-Paper-1555]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[minecraft_server.jar:git-Paper-1555]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[minecraft_server.jar:git-Paper-1555]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:527) ~[minecraft_server.jar:git-Paper-1555]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:512) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1986) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$$Lambda$219/909823645.run(Unknown Source) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_45]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_45]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:850) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774) ~[minecraft_server.jar:git-Paper-1555]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666) ~[minecraft_server.jar:git-Paper-1555]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]
Caused by: java.lang.IllegalArgumentException: No enum constant org.bukkit.Sound.LEVEL_UP
at java.lang.Enum.valueOf(Unknown Source) ~[?:1.8.0_45]
at org.bukkit.Sound.valueOf(Sound.java:11) ~[minecraft_server.jar:git-Paper-1555]
at ru.galaxy773.supremebox.Case$1.<init>(Case.java:91) ~[?:?]
at ru.galaxy773.supremebox.Case.open(Case.java:75) ~[?:?]
at ru.galaxy773.supremebox.Listeners.onInventoryInteract(Listeners.java:47) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor446.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:70) ~[minecraft_server.jar:git-Paper-1555]
... 17 more

 

Какая версия майна?

 

1.12.2

 

Если я дам тебе рабочий плаг ты не откажешься?

 

Не откажусь

 

Поменяй формат на .jar

 

Лайк если помог)