docs: protected HawkbitErrorNotificationMessage buildNotification(final Throwable ex) {
  
          LOG.error("Error in UI: ", ex);
  
          final String errorMessage = extractMessageFrom(ex);
          final VaadinMessageSource i18n = SpringContextHelper.getBean(VaadinMessageSource.class);
  
          return new HawkbitErrorNotificationMessage(STYLE, i18n.getMessage("caption.error"), errorMessage, true);
      }