The 'formatter.fieldset' library is depending on a deprecated library. The core/jquery.once asset library is deprecated in Drupal 9.3.0 and will be removed in Drupal 10.0.0. Use the core/once library instead. See https://www.drupal.org/node/3158256
Results are from dataset #148 from 2022-09-11T12:04. Report is ran by the Drupal Association regularly.
