test.es error

I typed "test.es" and this error appeared in my console:
[23:33:25] [Async Chat Thread - #1/WARN]: java.net.MalformedURLException: lUrl is not a valid URL: test.e
[23:33:25] [Async Chat Thread - #1/WARN]:   at com.CreepersHelp.adfly.api.Adfly.shorten(Adfly.java:129)
[23:33:25] [Async Chat Thread - #1/WARN]:   at com.CreepersHelp.adfly.api.Adfly.supportMe(Adfly.java:73)
[23:33:25] [Async Chat Thread - #1/WARN]:   at com.CreepersHelp.adfly.bukkit.listeners.MainListener.filter(MainListener.java:121)
[23:33:25] [Async Chat Thread - #1/WARN]:   at com.CreepersHelp.adfly.bukkit.listeners.MainListener.onChat(MainListener.java:97)
[23:33:25] [Async Chat Thread - #1/WARN]:   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[23:33:25] [Async Chat Thread - #1/WARN]:   at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.lang.reflect.Method.invoke(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)
[23:33:25] [Async Chat Thread - #1/WARN]:   at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[23:33:25] [Async Chat Thread - #1/WARN]:   at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[23:33:25] [Async Chat Thread - #1/WARN]:   at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484)
[23:33:25] [Async Chat Thread - #1/WARN]:   at net.minecraft.server.v1_8_R3.PlayerConnection.chat(PlayerConnection.java:1087)
[23:33:25] [Async Chat Thread - #1/WARN]:   at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1025)
[23:33:25] [Async Chat Thread - #1/WARN]:   at net.minecraft.server.v1_8_R3.PacketPlayInChat$1.run(PacketPlayInChat.java:39)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.util.concurrent.FutureTask.run(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
[23:33:25] [Async Chat Thread - #1/WARN]:   at java.lang.Thread.run(Unknown Source)
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