http-errors | A generic package for HTTP exceptions | HTTP library

I'm trying to create a pdf from html template calling an api, so i'm using puppeteer.

The problem is, when i try to create a new page from puppeteer launch, it doesn't work and also it restarts the server and I don't know why. I'm working on localhost and the version of puppeteer is ^9.1.1

Here is the code when I call the api by clicking a href link

I am working on setting up a React frontend that queries data from an Express backend. I have 2 routes set up: users and stories. The users route is working correctly. However when I try to fetch the stories route, it's still returning the users data, and I'm not sure why.

I'm hoping someone can help point out why no matter what path I set the fetch to in ComponenetDidMount, I always get the users data returned.

My React component looks like this:

So, basically I am trying to link two ejs files to express. The first one gets connected and displays result but second one that comes after pressing a button on first one shows error.

The user-list file displays results correctly but the exact same table code shows error in parks

parks.ejs (when I click the link in user-list that redirects here, it says userData not defined)

I'm trying to test routes done in express throught Postman but i keep getting status 404 despite i have another route that does work.

I won't post the code to the routes that do work since there's a lot of code written in here and seems unnecesary.

App.js

I'm new to NodeJS Express, I was following the official tutorial from express-ws to setup websocket in the simple project generated by npx express-generator . In the app.js, I've to explicitly call the app.listen(3000) in order to make the ws connection working. Am I doing this correctly although it is working ? What's the difference between app.listen vs. server.listen in this case? what is app.set(port,port) in www.js used for?

app.js - I've to add the last line below:

I'm trying to do a login page using axios but got an error on the console saying : POST http://localhost:3000/login/signin 404 (Not Found) , I don't understand what I'm doing wrong. My route works perfectly fine on postman, but not in the front end. I attached my loginpage, route page and app.js. Can someone help?

I'm trying to access my routes /api and /api/superheroes, but i'm getting this error when I do that.

I am a beginner, just started to learn express and webpack, I tried to use the initial express file Trying to use webpack for packaging, I keep getting errors

The reason for this is because I want to run my system in a non-node.js environment

Is my direction wrong?

The express project is create with express --view=ejs myapp I didn't make any changes

webpack.config.js

I've tried what feels like every answer on Stack Overflow regarding CORS and React, but I can't seem to get anything to work. I want to run React on localhost:3000 and Express on localhost:9090, then post some data from React to Express, and get back a message that says the server got the data.

I always get this error:

Access to fetch at 'http://127.0.0.1:9090/api' from origin 'http://localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

In my server I have two files involved in this:

api.js