Fatal error: Uncaught Error: Interface "Drupal\Core\Ajax\CommandInterface" not found in /home/fnbrshareacopy/public_html/modules/contrib/webform/src/Ajax/WebformScrollTopCommand.php:12 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/webform/src/Ajax/WebformScrollTopCommand.php on line 12