: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
abstract class WPML_Ajax_Factory {
public function add_route( WPML_Ajax_Route $route ) {
$class_names = $this->get_class_names();
foreach ( $class_names as $class_name ) {
$route->add( $class_name );
abstract function get_class_names();
abstract function create( $class_name );