The themeforest support tell me that I have this two errors in a WordPress theme: this and this.
This is the wp_nav_menu walker function:
class description_walker extends Walker_Nav_Menu
{
  function start_el(&$output, $item, $depth, $args )
  {
       global $wp_query;
       $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
       $class_names = $value = '';
       $classes = empty( $item->classes ) ? array() : (array) $item->classes;
       $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );
       $class_names = ' class="'. esc_attr( $class_names ) . '"';
       $output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'>';
       $attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';
       $attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';
       $attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';
       $attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';
       if($depth != 0)
       {
                 $description = $append = $prepend = "";
       }
        $item_output = $args->before;
        $item_output .= '<a'. $attributes .' class="external">';
        $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID );
        $item_output .= '</a>';
        $item_output .= $args->after;
        $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
                    if ($item->menu_order == 1) {
            $classes[] = 'first';
        }
        }
}
The problem is that my WordPress doesnt show this errors. I have WordPress 3.8.1 and I haveWP_DEBUG` set to true.
The first error seems to fixed changing this line: function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0).
The second error I have change  $item_output = $args->before; to  $item_output = $args['before']; But this cause an error:
Fatal error: Cannot use object of type stdClass as array in /home/codetoco/public_html/wp-content/themes/quins/functions.php on line 338
Why are they getting an error an me not? How can I fix this errors?
 
     
    