Unhandled Rejection (Error): Guest is already patching

export function patchGuest(guest) {
  return (dispatch, getState) => {
    if (shouldPatchGuest(getState())) {
      dispatch(apiPatchGuest());
      return BookingApi.patchGuest(guest.id, guest.json())
        .then(response => {
          const json = response.data;
          const updatedGuest = Guest.asGuest(json);
          dispatch(setStateUpdateGuest(updatedGuest));
        })
        .catch(err => {
          dispatch(apiError(err));
          throw err;
        });
    }
    return Promise.reject(new Error('Guest is already patching'));
  };
}

patchOnBlur = (event) => {
    const { meta: { dirty, error }, dispatch, currentGuest, fieldName } = this.props;
    if (dirty && !error) {
      const patched = currentGuest.patch({
        [fieldName]: event.target.value
      });
      dispatch(patchGuest(patched));
    }
  };