error message cant locate object mthod

[tokyo88]

OpenKore version what-will-become-2.1
@ai_seq = attack route
Network state = 5
Network handler = Network::DirectConnection
SVN revision: 7513
No loaded plugins.

Error message:
Can't locate object method "sendAttack" via package "Network::Send::pRO" at src/AI/Attack.pm line 571.

Stack trace:
Can't locate object method "sendAttack" via package "Network::Send::pRO" at src/AI/Attack.pm line 571.
at src/AI/Attack.pm line 571
AI::Attack::main() called at src/AI/Attack.pm line 93
AI::Attack::process() called at src/AI/CoreLogic.pm line 77
AI::CoreLogic::iterate() called at src/functions.pl line 738
main::mainLoop_initialized() called at src/functions.pl line 69
main::mainLoop() called at src/Interface.pm line 75
Interface::mainLoop('Interface::Console::Win32=HASH(0x10685a4)') called at openkore.pl line 97
main::__start() called at start.pl line 129

Died at this line:
} else {
* $messageSender->sendAttack($ID,
($config{'tankMode'}) ? 0 : 7);


help me pls ho to fix this one? thnks in advance