RangeError [ERR_HTTP_INVALID_STATUS_CODE]: Invalid status code:

Question

This is the full error message when I open http://localhost:5000/express_backend

I am trying to send a json object to the server and I got this error.

Below is my server.js

const express = require('express'); //Line 1
const app = express(); //Line 2
const port = process.env.PORT || 5000; //Line 3

app.listen(port, () => console.log(`Listening on port ${port}`)); 

app.use((err,req,res,next)=>{
   res.status(404).json({
       error : {
           message : err.message
      }
   });
})

// create a GET route
app.get('/express_backend', (req, res) => { //Line 9
  res.send(
    {
      name: "Tester one",
      techs: ["React & Redux", "Express", "MySQL"],
      description: "Lorem ipsum doabore et",
      checkin: "09:00",
      checkout:"18:30",
      type:"Known"
  },
  {
      name: "Tester two",
      techs: ["React & Redux", "Express", "MySQL"],
      description: "Lorem ipsum dolor sit amet, consectetet",
      checkin: "09:00",
      checkout:"18:30",
      type:"Blacklisted"
  }
  );
});

I am not sure why this is happening, I am trying to send an json objects to the server

statusCode parameter is missing in response object of /express_backend — dc7
– dc7, Commented Oct 19, 2021 at 5:29
app.use((err,req,res,next)=>{ res.status(404).json({ error : { message : err.message } }); }) — yongchang
– yongchang, Commented Oct 19, 2021 at 5:33

Lin Du · Accepted Answer · 2021-10-20 02:29:12Z

1

You have a typo, you lost the brackets [], it should be

res.send([
  {
    name: 'Tester one',
    techs: ['React & Redux', 'Express', 'MySQL'],
    description: 'Lorem ipsum doabore et',
    checkin: '09:00',
    checkout: '18:30',
    type: 'Known',
  },
  {
    name: 'Tester two',
    techs: ['React & Redux', 'Express', 'MySQL'],
    description: 'Lorem ipsum dolor sit amet, consectetet',
    checkin: '09:00',
    checkout: '18:30',
    type: 'Blacklisted',
  },
]);

edited Oct 20, 2021 at 2:29

answered Oct 19, 2021 at 5:43

Lin Du

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