[17:55:36 ERROR]: Could not pass event InventoryClickEvent to Fiksiki v1.0-SNAPSHOT
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:66) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:2107) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.PacketPlayInWindowClick.a(SourceFile:33) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.PacketPlayInWindowClick.a(SourceFile:10) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:9) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_151]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
	at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:896) [minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.lang.NullPointerException
	at ru.atomicscience.fixiki.Fixiki.onInventoryInteract(Fixiki.java:54) ~[Fiksiki%20(4).jar:?]
	at sun.reflect.GeneratedMethodAccessor152.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:312) ~[minecraft_server.jar:git-Spigot-f09662d-7c395d4]
	... 15 more