[11:45:00] [Server thread/ERROR]: Could not pass event PlayerToggleFlightEvent to Lobby-System v0.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:2133) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.PacketPlayInAbilities.a(SourceFile:70) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.PacketPlayInAbilities.a(SourceFile:9) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
	at net.minecraft.server.v1_10_R1.SystemUtils.a(SourceFile:45) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:732) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567) [spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.NoSuchFieldError: NOTE_PLING
	at gartenzaun.Lobby.onToggleFly(Lobby.java:258) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-1.10.2.jar:git-Spigot-de459a2-51263e9]
	... 15 more