Problem with add_action

I have a function that i need to run every time a subscription status changes to active, This is my code: add_action( ‘woocommerce_subscription_status_active’, array( __CLASS__,’add_subscription_course_access’ ) ); public static function add_subscription_course_access( $order ) { $products = $order->get_items(); $customer_id = $order->get_customer_id(); $courses_id = get_field(‘user-programs’, ‘user_’. $customer_id); $courses_id = str_replace(“[“,””,$courses_id); $courses_id = str_replace(“]”,””,$courses_id); $courses_id = explode(“,”,$courses_id); foreach…