MB Relationships WordPress database error

Hi, I am using MB Blocks to link two CPTs, Operator, & Regulator. Here is how I am defining the Relationship:

MB_Relationships_API::register([
        'id'   => 'operator_to_regulator',
        'from' => [
            'object_type' => 'post',
            'post_type'   => 'operator',
            'meta_box'    => [
                'title' => 'Is regulated by:',
            ],
        ],
        'to'   => [
            'object_type' => 'post',
            'post_type'   => 'regulator',
            'field'       => [
                'query_args' => [
                    'post_status' => array('publish', 'draft', 'private')
                ],
            ],
            'meta_box'    => [
                'title' => 'Regulates the following operators:',
            ],
        ],
    ]);

Here's the error I am getting:

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) WHERE 1=1 AND wp_posts.post_type = 'regulator' AND ((wp_posts.post_statu' at line 2]
SELECT wp_posts.* , mbr.from FROM wp_posts INNER JOIN wp_mb_relationships AS mbr ON (mbr.to = wp_posts.ID AND mbr.type = 'operator_to_regulator' AND mbr.from IN ()) WHERE 1=1 AND wp_posts.post_type = 'regulator' AND ((wp_posts.post_status = 'publish' OR wp_posts.post_status = 'future' OR wp_posts.post_status = 'draft' OR wp_posts.post_status = 'pending' OR wp_posts.post_status = 'auto-draft' OR wp_posts.post_status = 'private')) GROUP BY mbr.from, wp_posts.ID ORDER BY mbr.order_from

I am using:
PHP 8.1.0
WordPress 6.2.4
MB Relationships 1.11.3

Any help would be greatly appreciated.

Thanks!