Ninja Forms - PDF Form Submissions | PDF Export Errors with Checkboxes Field

Overview of the issue

When you try to export form submissions to PDF using the Ninja Forms — PDF Form Submissions add-on from Ninja Forms, you will encounter that it does not work as expected when the form includes checkboxes fields.

Workaround

Please, make sure of having a full site backup of your site before proceeding.

• Open …/wp-content/plugins/wpml-ninja-forms/classes/SharedAPI/Notifications.php file.
• Look for line 214.
• Replace:

  public function applyOptionsTranslation( array $options, array $field, $formId ) {
  

• With:

  public function applyOptionsTranslation( $options, array $field, $formId ) {