Console Error

[10:07:42 INFO]: HDTVSteve issued server command: /bossbaron
[10:07:42 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'bossbaron' in plugin BossBarAPI v1.0
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:621) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1079) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:939) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-e8c6403]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [?:1.7.0_79]
	at java.util.concurrent.FutureTask.run(FutureTask.java:262) [?:1.7.0_79]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SystemUtils.java:19) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:676) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:632) [craftbukkit.jar:git-Bukkit-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:540) [craftbukkit.jar:git-Bukkit-e8c6403]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
Caused by: java.lang.NoClassDefFoundError: me/confuser/barapi/BarAPI
	at me.HDTVSteve.BossBar.onCommand(BossBar.java:41) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	... 15 more
Caused by: java.lang.ClassNotFoundException: me.confuser.barapi.BarAPI
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[?:1.7.0_79]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_79]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_79]
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_79]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_79]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_79]
	at me.HDTVSteve.BossBar.onCommand(BossBar.java:41) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Bukkit-e8c6403]
	... 15 more
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