還是不能打怪??會斷線??

請問懂的大大們~我登入後~他會出現一些錯誤訊息後~就斷線- -
可以教導我是那裡錯誤嗎?
感謝!!!!

以下是錯誤的訊息~
OpenKore version what-will-become-2.1
@ai_seq = skill_use attack route
Network state = 5
Network handler = Network::DirectConnection
SVN revision: 7503
No loaded plugins.

Error message:
No valid skill identifier specified.

Stack trace:
Trace begun at src\Skill.pm line 136
Skill::new('Skill', 'handle', undef) called at src\AI\CoreLogic.pm line 658
AI::CoreLogic::processSkillUse at src\AI\CoreLogic.pm line 80
AI::CoreLogic::iterate at src\functions.pl line 738
main::mainLoop_initialized at src\functions.pl line 69
main::mainLoop at src\Interface.pm line 75
Interface::mainLoop('Interface::Console::Win32=HASH(0x3322c9c)') called at openkore.pl line 97
main::__start at start.pl line 129

Died at this line:
  
} else {
*
ArgumentException->throw("No valid skill identifier specified.");
  
}