[Andre02]

Quote:

Originally Posted by Viki Код: C:\Users\Waqar\Desktop\z\gamemodes\zombie.pwn(8697) : error 021: symbol already defined: "S@@_OnPlayerTakeDamage" Pawn compiler 3.2.3664 Copyright © 1997-2006, ITB CompuPhase 1 Error. NEW ERROR does this matter?

You did what Roberto told you to do didn't you ?
That is wrong, OnPlayerTakeDamage is already a default callback so there is no need to forward it!

Just do what is in this thread: https://sampforum.blast.hk/showthread.php?tid=488198
and done it will be fixed!
The problem comes from YSI\y_hooks\impl.inc & YSI\y_als\impl.inc includes, read more about it in that topic