Custom url author frontend in WordPress

functions.php

/* Add Custom User Profile Fields - Url author
*===============================================================*/
// Get user meta on frontend with: get_user_meta( $user_id, "field_id", true );
function vts_url_author( $user ) {
	$output = '';	$output .= '<h2>'.__("Author Url", "vutruso").'</h2>';
        $output .= '<table class="form-table">';
            $output .= '<tr>';
                $output .= '<th><label for="vts_author_url">'.__("Author url", "vutruso").'</label></th>';
                $output .= '<td>';
                    $output .= '<input placeholder="Author url" type="url" name="vts_author_url" id="vts_author_url" value="'.esc_attr( get_user_meta( $user->ID, 'vts_author_url', true ) ).'" class="regular-text" /><br />';
                                  
                $output .= '</td>';
            $output .= '</tr>';  
	$output .= '</table>';
	echo $output;
}

add_action( 'show_user_profile', 'vts_url_author' );
add_action( 'edit_user_profile', 'vts_url_author' );

// Save Custom User Profile Fields
function vts_url_author_save( $user_id ) {

	if ( !current_user_can( 'edit_user', $user_id ) ) {
		return false;
        }
        update_user_meta( $user_id, 'vts_author_url', $_POST['vts_author_url'] );
        
}
add_action( 'personal_options_update', 'vts_url_author_save' );
add_action( 'edit_user_profile_update', 'vts_url_author_save' );


//custom url author frontend
add_filter( 'author_link', 'new_author_link', 10, 1 );
function new_author_link( $link ) { 
    global $current_user; 
    $info = wp_get_current_user();
    $link = get_the_author_meta('vts_author_url');

    if($link!==""){
        return $link;   
    }else{ 
        $link = '#';
        return $link;
    }
         
}