Plugin fails activation if Polylang is activated

PHP Fatal error: Uncaught Error: Call to a member function get_setting() on null in /wp-content/plugins/geodirectory/geodirectory_hooks_actions.php:2834

Related code is:

    if (function_exists('icl_object_id')) {
        global $sitepress;
        
        if ($sitepress->get_setting('sync_comments_on_duplicates')) {

Polylang implements icl_object_id as part of its legacy wpml compatibility, but does not implement $sitepress->get_setting so this code dies and plugin is not activated.