Meta Box builder not working after update

Hi, I just updated Meta Box plugin to Version 5.3.1 and Meta Box AIO to Version 1.11.10.

I already had a custom post type set up via Meta Box, and a group of custom fields created for that post type via the Custom Fields Builder.

When I edit one of these posts all the custom fields are still displayed.

When I go to Meta Box > Custom Fields and edit the Group, the Fields tab says "No fields. Select fields on the left to add them to this field group."

And the the column on the left from where I usually drag the fields just says "{{ group }}".

The Settings tab shows none of my settings.

The Code tab, interestingly still shows the code, see below.

I am not finished with editing this Custom Fields Group in the Builder, still wanted to add a few things. Is there anything I can do to get the fields back to the builder?

Thanks in advance.

add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );

function your_prefix_register_meta_boxes( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = array (
        'title' => esc_html__( 'Tour Information', 'text-domain' ),
        'id' => 'hls_tour_info',
        'post_types' => array(
            0 => 'hls-ve-tour',
        ),
        'context' => 'normal',
        'priority' => 'high',
        'fields' => array(
            array (
                'id' => $prefix . 'hls_info_intro',
                'name' => esc_html__( 'Tour Intro', 'text-domain' ),
                'type' => 'wysiwyg',
                'desc' => esc_html__( 'Intro - keep the formatting simple / use plain text', 'text-domain' ),
            ),
            array (
                'id' => $prefix . 'hls_info_tour_duration',
                'type' => 'text',
                'name' => esc_html__( 'Tour Duration', 'text-domain' ),
            ),
            array (
                'id' => $prefix . 'hls_info_quote',
                'type' => 'textarea',
                'name' => esc_html__( 'Quote', 'text-domain' ),
                'desc' => esc_html__( 'A short quote or interesting highlight/fact about the tour.', 'text-domain' ),
                'required' => 1,
            ),
            array (
                'id' => $prefix . 'hls_info_overview',
                'name' => esc_html__( 'Tour Overview', 'text-domain' ),
                'type' => 'wysiwyg',
            ),
            array (
                'id' => $prefix . 'hls_info_included',
                'name' => esc_html__( 'Included in the tour', 'text-domain' ),
                'type' => 'wysiwyg',
                'desc' => esc_html__( 'Use a list with bullets for clarity. Extra information can be added above or below the list if required.', 'text-domain' ),
                'std' => '<ul>
<li>list</li>
</ul>',
            ),
            array (
                'id' => $prefix . 'hls_info_pricing',
                'name' => esc_html__( 'Pricing', 'text-domain' ),
                'type' => 'wysiwyg',
                'desc' => esc_html__( 'Use a list with bullets for clarity. Extra information can be added above or below the list if required.', 'text-domain' ),
                'std' => '<ul>
<li>R 000.00 per person</li>
</ul>',
            ),
            array (
                'id' => $prefix . 'hls_info_price',
                'type' => 'text',
                'name' => esc_html__( 'Price', 'text-domain' ),
                'desc' => esc_html__( 'Package price, for example: "R 123.00 per person."', 'text-domain' ),
                'required' => 1,
            ),
            array (
                'id' => $prefix . 'hls_info_price_featured',
                'type' => 'text',
                'name' => esc_html__( 'Price or Subtitle on Featured Blocks', 'text-domain' ),
                'desc' => esc_html__( 'Featured package price, for example: "From R 123.00 per person."', 'text-domain' ),
                'required' => 1,
            ),
            array (
                'id' => $prefix . 'hls_info_booking_link',
                'type' => 'url',
                'name' => esc_html__( 'Link/URL to booking page', 'text-domain' ),
                'required' => 1,
            ),
            array (
                'id' => $prefix . 'hls_info_gallery',
                'type' => 'image_advanced',
                'name' => esc_html__( 'Upload Photos for Gallery Slider', 'text-domain' ),
                'desc' => esc_html__( 'Square format, maximum 1080 x 1080px', 'text-domain' ),
                'max_file_uploads' => 10,
                'max_status' => 1,
            ),
        ),
    );

    return $meta_boxes;
}

`