Error in V6.1.1

PHP 8 Problem

please solve it like this

/wp-content/plugins/plugin-optimizer/admin/class-po-admin.php
if (isset($post->ID)) {
	if($row = $wpdb->get_row("SELECT * FROM {$wpdb->prefix}po_filtered_endpoints WHERE post_id = '{$post->ID}'")){
		return array('PO Filtered');
	}
 }

//        parse_str( parse_url( $url, PHP_URL_QUERY ), $query_vars);
        wp_parse_str( parse_url( $url, PHP_URL_QUERY ), $query_vars);

/wp-content/plugins/plugin-optimizer/admin/pages/page-overview.php
if (isset($server_output->data)) {
      update_option('po_available_filters', $server_output->data->count);
      $available_count = $server_output->data->count;
}