fix: [js:bootstrap-helper] Make sure button exists

webroot/js/bootstrap-helper.js

@@ -48,6 +48,7 @@ class UIFactory {
     /**
      * Creates and displays a modal where the modal's content is fetched from the provided URL. Reloads the table after a successful operation and handles displayOnSuccess option
      * @param  {string} url - The URL from which the modal's content should be fetched
+     * @param  {string} reloadUrl - The URL from which the data should be fetched after confirming
      * @param  {string} tableId - The table ID which should be reloaded on success
      * @return {Promise<Object>} Promise object resolving to the ModalFactory object
      */
@@ -588,6 +589,7 @@ class ModalFactory {
     /** Attach the submission click listener for modals that have been generated by raw HTML */
     findSubmitButtonAndAddListener(clearOnclick=true) {
         const $submitButton = this.$modal.find('.modal-footer #submitButton')
+        if ($submitButton[0]) {
             const formID = $submitButton.data('form-id')
             let $form
             if (formID) {
@@ -617,6 +619,7 @@ class ModalFactory {
             $submitButton.click(this.getConfirmationHandlerFunction())
         }
     }
+}
 
 /** Class representing an loading overlay */
 class OverlayFactory {