Exception at /backpack help

[Sumafu]

#!

​19:02:09 [INFO] Khyron93 issued server command: /backpack ?
19:02:09 [WARNING] Exception in thread "pool-3-thread-25"
19:02:09 [WARNING] org.apache.commons.lang.UnhandledException: Plugin ChestBackpack v1.1.2 generated an exception while executing task 56
19:02:09     at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
19:02:09     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
19:02:09     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
19:02:09     at java.lang.Thread.run(Unknown Source)
19:02:09 Caused by: java.lang.NoClassDefFoundError: net/md_5/bungee/api/ChatColor
19:02:09     at de.sumafu.ChestBackpack.main.CommandBackpack.run(CommandBackpack.java:79)
19:02:09     at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:53)
19:02:09     at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
19:02:09     ... 3 more

[Sumafu]

Release 1.1.3