Помогите Как исправить ошибку с InventoryClickEvent в MDonateCase

Я хочу открыть донат кейс(я выдал ключ). Но нажимаю и ничего не происходит. Посмотрел в консоль и увидел это:
[ERROR] Could not pass event InventoryClickEvent to DonatCase v0.1

org.bukkit.event.EventException: null

at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298) ~[craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:498) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:483) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1808) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:33) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:10) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_192]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_192]

at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:695) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:370) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:650) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:554) [craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

at java.lang.Thread.run(Thread.java:813) [?:1.8.0_192]

Caused by: java.lang.NoSuchMethodError: org/bukkit/event/inventory/InventoryClickEvent.getClickedInventory()Lorg/bukkit/inventory/Inventory; (loaded from file:/home/gs-40365/craftbukkit-1.12.jar by sun.misc.Launcher$AppClassLoader@b8e65f8) called from class ru.master.fix.listeners.CaseListener (loaded from file:/home/gs-40365/plugins/DonatCase.jar by org.bukkit.plugin.java.PluginClassLoader@54423b9a).

at ru.master.fix.listeners.CaseListener.onInventoryClickEvent(CaseListener.java:33) ~[?:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_192]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_192]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_192]

at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_192]

at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:296) ~[craftbukkit-1.12.jar:git-Bukkit-9a1fc1e]

... 15 more
Кто поможет, буду благодарен

 

Используй лучше плагин DonatCase)