[Joe Staff]

You issues are here:

pawn Код:

forward OnPlayerDeath(playerid, killerid, reason);
public OnPlayerDeath(playerid, killerid, reason);

Because OnPlayerDeath is a native callback (meaning it already exists), you don't have to declare(forward) it. Also you have a misplaced semicolon (';') after this line

pawn Код:

public OnPlayerDeath(playerid, killerid, reason);//This semicolon should not exist