Problem/Bug Problem in the console

Hello, when a no-premium player log in on my server, I get this error:

[18:59:45 WARN]: Exception in thread "Thread-21" [18:59:45 WARN]: java.lang.NoClassDefFoundError: net/md_5/bungee/api/ChatColor [18:59:45 WARN]: at skinsrestorer.shared.utils.SkinFetchUtils.c(SkinFetchUtils.java:100) [18:59:45 WARN]: at skinsrestorer.shared.utils.SkinFetchUtils$SkinFetchFailedException$Reason.<clinit>(SkinFetchUtils.java:77) [18:59:45 WARN]: at skinsrestorer.shared.utils.MojangAPI.getProfile(MojangAPI.java:46) [18:59:45 WARN]: at skinsrestorer.shared.utils.SkinFetchUtils.fetchSkinProfile(SkinFetchUtils.java:38) [18:59:45 WARN]: at skinsrestorer.shared.format.SkinProfile.attemptUpdate(SkinProfile.java:55) [18:59:45 WARN]: at skinsrestorer.bukkit.listeners.LoginListener$2.run(LoginListener.java:82) [18:59:45 WARN]: at java.lang.Thread.run(Thread.java:745) [18:59:45 WARN]: Caused by: java.lang.ClassNotFoundException: net.md_5.bungee.api.ChatColor [18:59:45 WARN]: at java.net.URLClassLoader.findClass(URLClassLoader.java:381) [18:59:45 WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) [18:59:45 WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) [18:59:45 WARN]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424) [18:59:45 WARN]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357) [18:59:45 WARN]: ... 7 more

Can you tell me what is it? I dont have any plugin called ChatColor...

 

@ivoltic by a no-premium player are you saying that are you are running an offline/cracked server?

 

@ivoltic
By "premium player", I assume you mean some sort of rank on your server. My theory goes like this: when these "premium players" log in I think it's supposed to show some sort of coloured chat message, but the plugin mistakenly uses the bungee ChatColor class (I make this mistake myself all the time) and can't find it, because presumably you don't have bungee installed. In essence, a plugin named SkinsRestorer is probably badly coded.