how to handle error express code example

Example 1: express error handling

app.use(function (err, req, res, next) {
  console.error(err.stack)
  res.status(500).send('Something broke!')
})

Example 2: put route error express

//don't forget the "/" in the route targeted URL : 
app.put("/collection/:id", (req, res)=>{
	//route content
})