Server not responding to Postman

it's possible you don't have a response on the post route? Can you share your code? Wild guess based off your terminal output there your post controller looks something like:

router.post('/route', (req, res) => {
  //do stuff with the req
  res.json(jsonObject); //missing this line? whether it be res.json/res.send etc
});

Im having the same issue but I do have a res on my route:

//POST /questions
// Route for creating questions
router.post('/', (req, res, next)=>{
  var question = new Question(req.body);
  question.save(function(err, question) {
    if (err) return next(err);
    res.status(201);
    res.json(question);
  });
});

Any ideas?

I solved my issue from above, so I wanted to write this for anyone that may have issues in the future:

Postman gives this error: There was an error connecting to localhost:3000/questions

Why this might have happened:

The server couldn't send a response: Ensure that the backend is working properly

Self-signed SSL certificates are being blocked: Fix this by turning off 'SSL certificate verification' in Settings > General

Proxy configured incorrectly: Ensure that proxy is configured correctly in Settings > Proxy

Request timeout: Change request timeout in Settings > General

My issue was because there was a typo in my Question Schema. So my issue was (Ensure that the backend is working properly). If you have to check your application start at the route that is causing the error then move to any references that are made within that route...and so on.

I am having an issue that I think is similar to the above. When trying to make a GET on localhost:3000/questions I am getting a "not found" error. Below is my code for the GET. Any ideas?

router.get('/', function(req, res, next){
    Question.find({})
        .sort({createdAt: -1})
        .exec(function(err, questions){
            if(err) return next(err)
            res.json(questions)
    })
})

when making routes make sure both the error handler middlewares are the last in order