[ACİL] Websend plugini hata

[serif0]

Merhaba dostlar, sunucuma websend plugini yükledim fakat bir sıkıntım var, spigot sürümüm 1,8,8
server icerisinde /websend yazınca ; an internal error occurred while attempting to perform this command hatası alıyorum birde konsola şöyle bir şey geliyor;

28.11 18:01:16 [Server] INFO ... 15 more
28.11 18:01:16 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) -[spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at com.github.websend.Main.onCommand(Main.java:165) -[?:?]
28.11 18:01:16 [Server] INFO Caused by: java.lang.NullPointerException
28.11 18:01:16 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_111]
28.11 18:01:16 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_111]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) -[spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) -[spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) -[spigot-1.8.8.jar:git-Spigot-db6de12-18fbb24]
28.11 18:01:16 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'websend' in plugin Websend v2.5.7
28.11 18:01:16 [Server] ERROR null

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