Exception when using chat channels

[Trojaner]

[22:09:09 ERROR]: [SinkChat] Warning! Unexpected exception occurred
java.lang.NullPointerException
at org.bukkit.event.player.AsyncPlayerChatEvent.setFormat(AsyncPlayerChatEvent.java:100) ~[server.jar:git-Spigot-e4d4710-e1ebe52]
at de.static_interface.sinkchat.listener.ChatListener.handleChat(ChatListener.java:100) ~[SinkChat.jar:?]
at de.static_interface.sinkchat.listener.ChatListener.onAsyncPlayerChat(ChatListener.java:59) [SinkChat.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_60]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_60]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [server.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [server.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [server.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [server.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PlayerConnection.chat(PlayerConnection.java:1084) [server.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1022) [server.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PacketPlayInChat$1.run(PacketPlayInChat.java:39) [server.jar:git-Spigot-e4d4710-e1ebe52]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_60]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_60]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_60]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_60]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]