Could not pass event PlayerJoinEvent to BildungsSurvival v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.onPlayerJoin(PlayerList.java:282) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerList.a(PlayerList.java:142) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.b(LoginListener.java:115) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.LoginListener.c(LoginListener.java:53) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.NetworkManager.a(NetworkManager.java:222) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.ServerConnection.c(SourceFile:168) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:745) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]
Caused by: java.lang.NoClassDefFoundError: net/md_5/bungee/api/ChatColor
        at me.bildung.manager.ScoreboardManager.updateScoreboard(ScoreboardManager.java:70) ~[?:?]
        at me.bildung.events.PlayerJoin.onJoin(PlayerJoin.java:178) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_111]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_111]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_111]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_111]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 14 more