noclose

[13:23:16] [Server thread/INFO]: LittleEmiRose issued server command: /us convert
[13:23:18] [Server thread/ERROR]: Could not pass event InventoryClickEvent to UltimateStacker vmaven-version-number
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2162) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:13) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:898) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:891) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:874) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:808) [spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]
Caused by: java.lang.ClassCastException: org.bukkit.material.MaterialData cannot be cast to org.bukkit.block.CreatureSpawner
        at com.songoda.ultimatestacker.convert.WildStackerConvert.convertSpawners(WildStackerConvert.java:62) ~[?:?]
        at com.songoda.ultimatestacker.gui.GUIConvertWhat.lambda$registerClickables$2(GUIConvertWhat.java:61) ~[?:?]
        at com.songoda.ultimatestacker.utils.gui.AbstractGUI$1.onClickGUI(AbstractGUI.java:87) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_181]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_181]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_181]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[spigot-1.14.3.jar:git-Spigot-d05d3c1-087a2cf]
        ... 17 more