const express = require('express')
const app = express();
function middleWear1(req, res, next) {
throw Error()
}
function errorHandler(err, req, res, next) {
console.log("error handled");
res.end("error occured at server")
}
app.use(middleWear1)
app.use(errorHandler)
app.get('/', middleWear1)
app.listen(8000, () => {
console.log("server is listening");
})
After accessing localhost:8000 in NodeJS, the message "error handled" gets printed twice in the terminal. It would be helpful if someone could provide an explanation for this occurrence.