I am new to testing and I was trying to use vitest for testing my mern social media app. looking for references to test a react component using vitest i found this article https://eternaldev.com/bl...

Uncaught runtime errors: ERROR > Cannot redefine property: googletag TypeError: Cannot redefine > property: googletag > at Function.defineProperty (<anonymous>) > at <anonymou...

MongooseError: Cannot populate path loaned_to because it is not in your schema. Set the strictPopulate option to false to override. I've tried to join two documents in mongodb using mongoose in nod...

I am a part of a project that is using the MERN stack and need info on how to structure my system architecture diagram. I am unsure whether MERN is a MVC, layered, client-server, or other architect...

Okay, so I was following a MERN stack tutorial and the tutor wrote out some lines of code but didn't really explain them well. this is the code: const path = require("path"); const { file...

I'm trying to set up some security middleware for my humble little MERN web app, and I'm currently using helmet and express-mongo-sanitize, specifically for protection against NoSQL injection attac...

I'm trying to hide a sidebar component from showing when a user visits the signup or login page. In react-router-dom version 5, we could use a div tag inside the Switch but it has been replaced wit...

Please help, I am getting this error src/app/middlewares/authentication.ts:16:17 - error TS2339: Property 'user' does not exist on type 'Request<ParamsDictionary, any, any, ParsedQs, Record<s...

I get the error "MongoParseError: options poolsize, usenewurlparse are not supported" when I run "nodemon server". Here the code for setting up the mongodb connection: import ap...

Trying to install mongodb server on my mac using Brew but getting this error. Updated my brew to latest version, still getting this error. Command i used: brew install [email protected]

I keep getting the following error when I proceed to run a workflow: Run npm test npm ERR! code ENOENT npm ERR! syscall open npm ERR! path /home/runner/work/armoire/armoire/package.json npm ERR! er...

Please help solve this problem. I am working with a MERN app. In the app, I upload images to the cloudnary using the API. Then I upload the image on the frontend using secure_url. It works on local...

I accidently run a command in my Mern project that ' npm un dev' instead of 'npm run dev' and it delete some packages and i don't know how to recover these packages.

I am using express js as backend and also have added proxy of backend in the package.json of react js. Before it used to throw an error with fetch method and moved to the axios method to prevent th...

I have a Navbar component in my React app which shows a Sidebar component when screen is small. I used Material UI for the Drawer for displaying the sidebar. My issue is, on clicking the hamburger ...

I've a simple app built on redux-toolkit. I am dispatching createProduct actions which is working fine. I want to navigate to /products/ page form /products/new page after createProduct action. How...

I have a simple MERN APP, that works fine on localhost, but when I deploy it to Heroku I see a page with this error: Application error An error occurred in the application and your page could not ...

I want to deploy my website to Heroku but I get the next error: error [email protected]: The platform "linux" is incompatible with this module. error Found incompatible module. I've already...

I'm working on a project with the MERN (MongoDB, Express, React, Node) stack and I'm having issues when posting data from a form within a React component to an API endpoint defined in Node.js. When...

I am new to MERN stack and I am following MERN stack tutorial on YouTube. I got an error on Mongoose. Error: `useFindAndModify` is an invalid option I couldn't find any solution to that. im...

I am trying to push a MERN stack repository on my GitHub but the client folder is saved as a shortcut, I have tried deleting the git folder inside the client but still it won't work What I have tr...

I have a React app, I'm trying to add a NavBar there like this <ul id="dropdown1" className="dropdown-content"> <li><NavLink to="/create">Create les...

I am in the process of deploying my MERN app to a Digital Ocean droplet(Ubuntu 20.04 server). I have cloned my GitHub repo, installed the dependencies and pm2. I start the server using the command ...

Case 1: const [present, setPresent] = useState([]); useEffect(() => { for (var j = 1; j <= totalPeriod; j++) { setPresent([ ...present, { period: j, present: true, }, ]); } ...

I have hosted my MERN app on Heroku , but whenever I implement helmet in app.js file it's causing this issue. const path = require('path'); const express = require('express'); const morgan = requir...