Fatal error: Uncaught Error: Class "Drupal\webform\Plugin\WebformElement\Checkbox" not found in /home/www/drupal8/test/modules/webform/src/Plugin/WebformElement/WebformToggle.php:19
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/modules/webform/src/Plugin/WebformElement/WebformToggle.php on line 19