After upgrade, bug on freemius

After latest upgrade, got a bug displayed on my site:

Can’t use method return value in write context in /wp/wp-content/plugins/yet-another-stars-rating/freemius/includes/class-freemius.php on line 12736

I had to comment the lines to make it worked:

/*
            if ( empty( $this->get_installs_ids_with_foreign_licenses() ) ) {
                // Handle user change only when the parent product or one of its add-ons is activated with a foreign license.
                return;
            }
*/

I think it is because I am still on php 5.3.