Блокирует отправку формы с ajax на Drupal 8

      if (typeof Drupal !== "undefined" && typeof Drupal.Ajax !== "undefined" && typeof Drupal.Ajax.prototype.beforeSubmitCVOriginal === "undefined") {
    Drupal.Ajax.prototype.beforeSubmitCVOriginal = Drupal.Ajax.prototype.beforeSubmit;
    Drupal.Ajax.prototype.beforeSubmit = function (form_values, element_settings, options) {
        if (options.data._triggering_element_name === "op") {
            if (typeof this.$form !== "undefined") {
                // $(this.$form).validate(drupalSettings.cvJqueryValidateOptions);
                if (this.$form.valid()) {
                    // console.log("ФОРМА ВАЛИДНА");
                } else {
                    // console.log("ФОРМА НЕ ВАЛИДНА");
                    this.ajaxing = false;
                    return false;
                }
            }
        }
        return this.beforeSubmitCVOriginal(form_values, element_settings, options);
    };
}