[Konstantinos]

It says that the variable you've defined, it is not used. You can delete this or just use it somewhere.
The one that I worry about is the error. That error is caused because the main(). Is it like this?

pawn Код:

#include <a_samp>
// rest of includes

main() {}

public OnGameModeInit()
{
    // code;
    return 1;
}
// rest of callbacks