extension is not working ( gives some errors with metabox builder )

http://i.imgur.com/n87H8P1.jpg

this is the metabox code

<?php
add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );
function your_prefix_register_meta_boxes( $meta_boxes ) {
    $meta_boxes[] = array (
      'id' => 'settings-2',
      'title' => 'Settings',
      'post_types' =>   array (
         'post',
         'page',
      ),
      'context' => 'normal',
      'priority' => 'high',
      'status' => 'publish',
      'autosave' => false,
      'fields' =>   array (
         
        array (
          'id' => 'image_advanced_1',
          'type' => 'image_advanced',
          'name' => 'Image Advanced',
          'max_file_uploads' => 4,
        ),
      ),
    );

    return $meta_boxes;
}

and this is the code after i click save

<?php
add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );
function your_prefix_register_meta_boxes( $meta_boxes ) {
    $meta_boxes[] = array (
      'id' => 'settings',
    );

    return $meta_boxes;
}