code: def kinit_timeout_handle(username, realm):
          
          try:
              u = User.objects.get(username__iexact=username)
          except User.DoesNotExist:
              logger.warning("kinit timed out for {}@{} (invalid user)".format(username, realm))
              return
  
          logger.critical("kinit timed out for {}".format(realm), extra={
              "stack": True,
              "data": {
                  "username": username
              },
              "sentry.interfaces.User": {
                  "id": u.id,
                  "username": username,
                  "ip_address": "127.0.0.1"
              }
          })
docs: Check if the user exists before we throw an error.