error 017: undefined symbol

[Alex_Jemison]

C:\Users\8bit\Desktop\Evolve\gamemodes\new.pwn(2330) : error 017: undefined symbol "Player@YSII_Ag"
C:\Users\8bit\Desktop\Evolve\gamemodes\new.pwn(2330) : error 017: undefined symbol "Player@YSII_Ag"
C:\Users\8bit\Desktop\Evolve\gamemodes\new.pwn(2330) : error 029: invalid expression, assumed zero
C:\Users\8bit\Desktop\Evolve\gamemodes\new.pwn(2330) : fatal error 107: too many error messages on one line

publics: IsVehicleOccupied(vehicleid)
{
    foreach(new i: Player) // 2330
    {
        if(IsPlayerInVehicle(i, vehicleid)) return i;
    }
    return -1;
}