UnhandledPromiseRejectionWarning: TypeError: res is not a function
[0]     at newInput.save.then.catch.err (C:UsersAlexDesktopNodenodeServerroutesapiinputsAPI.js:25:19)
[0]     at process._tickCallback (internal/process/next_tick.js:68:7)

router.post('/', (req, res) => {
  const newInput = new Input({
    inputs: req.body.inputs,
    formName: req.body.formName
  });

  newInput
    .save()
    .then(() => res.json(`The inputs were submitted successfully`))
    .catch(err => res('new input error:  ', err));
});