Meta Box

So I use the meta box AIO

<?php
add_filter( 'mb_settings_pages', 'your_prefix_function_name' );

function your_prefix_function_name( $settings_pages ) {
    $settings_pages[] = [
        'menu_title'  => __( 'Guru Settings', 'your-text-domain' ),
        'option_name' => 'Company',
        'position'    => 2,
        'parent'      => 'index.php',
        'style'       => 'no-boxes',
        'columns'     => 1,
        'icon_url'    => 'dashicons-admin-generic',
    ];
return $settings_pages;
}

AND I copied the code that the plugin gives me to the gallery section. This gallery section custom field was added after I asked you the question above

<?php
add_filter( 'rwmb_meta_boxes', 'your_prefix_function_name' );
function your_prefix_function_name( $meta_boxes ) {
    $prefix = 'settings_';
$meta_boxes[] = [
    'title'          => __( 'Guru', 'your-text-domain' ),
    'id'             => 7,
    'settings_pages' => ['guru-settings'],
    'tabs'           => [
        'settings_home_page'     => [
            'label' => 'Home Page',
            'icon'  => 'admin-home',
        ],
        'settings_contact_info'  => [
            'label' => 'Contact Info',
            'icon'  => '',
        ],
        'settings_about_us_page' => [
            'label' => 'About Us',
            'icon'  => 'admin-users',
        ],
        'settings_contact_us'    => [
            'label' => 'Contact Us',
            'icon'  => '',
        ],
        'settings_code'          => [
            'label' => 'Code',
            'icon'  => '',
        ],
        'settings_mobile_menu'   => [
            'label' => 'Mobile Menu',
            'icon'  => 'editor-justify',
        ],
        'settings_coupons'       => [
            'label' => 'Coupons',
            'icon'  => 'tag',
        ],
    ],
    'fields'         => [
        [
            'name' => __( 'Total # of Reviews', 'your-text-domain' ),
            'id'   => $prefix . 'total_reviews',
            'type' => 'text',
            'tab'  => 'settings_home_page',
        ],
        [
            'name' => __( 'AVG Stars', 'your-text-domain' ),
            'id'   => $prefix . 'avg_stars',
            'type' => 'text',
            'tab'  => 'settings_home_page',
        ],
        [
            'name'              => __( 'Promise Title', 'your-text-domain' ),
            'id'                => $prefix . 'promise_title',
            'type'              => 'text',
            'sanitize_callback' => 'none',
            'tab'               => 'settings_home_page',
        ],
        [
            'type' => 'heading',
            'name' => __( 'Picture Gallery', 'your-text-domain' ),
            'tab'  => 'settings_home_page',
        ],
        [
            'name'  => __( 'Actrivate Gallery', 'your-text-domain' ),
            'id'    => $prefix . 'activate_gallery',
            'type'  => 'switch',
            'style' => 'rounded',
            'tab'   => 'settings_home_page',
        ],
        [
            'name' => __( 'Gallery Title', 'your-text-domain' ),
            'id'   => $prefix . 'gallery_title',
            'type' => 'text',
            'tab'  => 'settings_home_page',
        ],
        [
            'name' => __( 'Gallery Explanation', 'your-text-domain' ),
            'id'   => $prefix . 'gallery_explanation',
            'type' => 'wysiwyg',
            'tab'  => 'settings_home_page',
        ],
        [
            'name'       => __( 'Gallery Pictures', 'your-text-domain' ),
            'id'         => $prefix . 'gallery_pictures',
            'type'       => 'image_advanced',
            'image_size' => 'large',
            'tab'        => 'settings_home_page',
        ],