[09:35:20] [Server thread/ERROR]: Could not pass event InventoryCreativeEvent to GreatKits v2.9
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:2303) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.PacketPlayInSetCreativeSlot.a(SourceFile:23) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.PacketPlayInSetCreativeSlot.a(SourceFile:9) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(SourceFile:144) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(SourceFile:118) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.MinecraftServer.ba(MinecraftServer.java:918) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:911) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:895) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:828) [serverengine.jar:git-Spigot-800b93f-8160e29]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_251]
Caused by: java.lang.NoSuchMethodError: org.bukkit.inventory.Inventory.getName()Ljava/lang/String;
        at fr.kizeko.greatkits.listeners.Listeners.onInventoryClick(Listeners.java:27) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_251]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_251]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[serverengine.jar:git-Spigot-800b93f-8160e29]
        ... 17 more