WordPress database (MariaDB) error in SQL syntax - MB Relationships

Hello,

I'm getting error notice as below:
WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')) WHERE 1=1 AND wp_1p_posts.post_type = 'job' AND ((wp_1p_posts.post_statu...' at line 1 for query SELECT wp_1p_posts.* , mbr.to AS mbr_69_to FROM wp_1p_posts INNER JOIN wp_1p_mb_relationships AS mbr ON (mbr.from = wp_1p_posts.ID AND mbr.type = '69' AND mbr.to IN ()) WHERE 1=1 AND wp_1p_posts.post_type = 'job' AND ((wp_1p_posts.post_status = 'publish')) GROUP BY mbr_69_to, wp_1p_posts.ID ORDER BY wp_1p_posts.post_date DESC LIMIT 0, 5 made by require('wp-blog-header.php'), wp, WP->main, WP->parse_request, do_action_ref_array('parse_request'), WP_Hook->do_action, WP_Hook->apply_filters, rest_api_loaded, WP_REST_Server->serve_request, WP_REST_Server->dispatch, WP_REST_Server->respond_to_request, WP_REST_Posts_Controller->get_items, WP_REST_Posts_Controller->prepare_item_for_response, apply_filters('the_content'), WP_Hook->apply_filters, do_shortcode, preg_replace_callback, do_shortcode_tag, MBViews\Shortcode->render, MBViews\Renderer->render, MetaBox\Dependencies\Twig\Environment->render, MetaBox\Dependencies\Twig\TemplateWrapper->render, MetaBox\Dependencies\Twig\Template->render, MetaBox\Dependencies\Twig\Template->display, MetaBox\Dependencies\Twig\Template->displayWithErrorHandling, __TwigTemplate_2ca5de825498539a4cbcc43de44f09c90e875b4f3005df4f967576ee9ab978b1->doDisplay, twig_get_attribute, MBViews\TwigProxy->__call, call_user_func_array, get_posts, WP_Query->query, WP_Query->get_posts

For your reference, please look at the below PHP code of the relationship id 69:

<?php
add_action( 'mb_relationships_init', 'your_prefix_function_name' );

function your_prefix_function_name() {
    MB_Relationships_API::register( [
        'id'   => '69',
        'from' => [
            'object_type' => 'post',
            'post_type'   => 'job',
            'meta_box'    => [
                'title'    => 'Add Employer Name',
                'context'  => 'normal',
                'priority' => 'high',
            ],
            'field'       => [
                'name' => 'Job connecting to employer',
                'desc' => 'Connect to the Country, University (if available Department)',
            ],
        ],
        'to'   => [
            'object_type' => 'post',
            'post_type'   => 'emp',
            'meta_box'    => [
                'title'    => 'Jobs by the Employer',
                'priority' => 'high',
            ],
            'field'       => [
                'name' => 'Job connected from Employer',
            ],
        ],
    ] );
}