[08:15:10] [Server thread/ERROR]: Could not pass event PrepareItemCraftEvent to SilkSpawners v3.7.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.dzikoysk.wildskript.objects.recipe.ResultEvent.onInventoryClick(ResultEvent.java:50) [WildSkript.jar:?]
	at sun.reflect.GeneratedMethodAccessor151.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_77]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_77]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1852) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:33) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:10) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_77]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_77]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [pve.jar:git-Spigot-e6f93f4-7a6b143]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_77]
Caused by: java.lang.NullPointerException
	at de.dustplanet.silkspawners.listeners.SilkSpawnersInventoryListener.onPrepareItemCraftEvent(SilkSpawnersInventoryListener.java:36) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor141.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_77]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_77]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[pve.jar:git-Spigot-e6f93f4-7a6b143]
	... 23 more