[00:41:42] [PrefixThread/WARN]: Exception in thread "PrefixThread"
[00:41:42] [PrefixThread/WARN]: java.lang.NoClassDefFoundError: net/minecraft/util/com/mojang/authlib/GameProfile
[00:41:42] [PrefixThread/WARN]: 	at net.dajman.core.base.OfflineUser.init(OfflineUser.java:166)
[00:41:42] [PrefixThread/WARN]: 	at net.dajman.core.base.OfflineUser.<init>(OfflineUser.java:35)
[00:41:42] [PrefixThread/WARN]: 	at net.dajman.core.managers.PrefixManager.refreshUser(PrefixManager.java:35)
[00:41:42] [PrefixThread/WARN]: 	at net.dajman.core.utils.thread.PrefixThread.run(PrefixThread.java:55)
[00:41:42] [PrefixThread/WARN]: Caused by: java.lang.ClassNotFoundException: net.minecraft.util.com.mojang.authlib.GameProfile
[00:41:42] [PrefixThread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:92)
[00:41:42] [PrefixThread/WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:87)
[00:41:42] [PrefixThread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[00:41:42] [PrefixThread/WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[00:41:42] [PrefixThread/WARN]: 	... 4 more