Author.php for custom post type

Yes, i already tried google and adding to the function.php the snipped of code with my custom post types, for some reason it is not working.

By default i assume it should fall to archive.php the one which is in the parent theme. Not working for me. I added an author.php with the same structure and it is not working too.

Any suggestions or directions?

I just managed to do it. It was a small mistake in the function from the first link. Now it works just fine for getting the author posts.

Here is what I am using, maybe someone else will need it too.

function custom_post_author_archive($query) {
    if ($query->is_author)
        $query->set( 'post_type', array('posttype1', 'posttype2') );
	return $query;
    remove_action( 'pre_get_posts', 'custom_post_author_archive' );
	
}
add_action('pre_get_posts', 'custom_post_author_archive');