Create react app proxy not working I use create-react-app to bootstrap my react app, I did this in my package. I can't get the example here to work. json "proxy":"http://localhost:3001" because my api server is running on 3001, but I fire request using axios, it still So I've set up my proxies on my create-react-app application using http-proxy-middleware. The development server will only attempt to send requests without a text/html accept header to the proxy. I have the backend running on port 3001, and the frontend runs through port 3000 when in dev mode. Here are some of the most common issues and how to solve them: The proxy is not working: If your API requests are not being proxied to the correct server, make sure that the URL in the "proxy" field is correct. However, in my new project I cannot get it to work. I'm sure I've followed the instructions to the letter, but I keep getting a 404 every time I try to click the relevant link. To clear it , follow the steps below. Steps to reproduce: $ create-react-app my-app $ npm install http-proxy-middleware To tell the development server to proxy any unknown requests to your API server in development, add a proxy field to your package. json, for example: "proxy" : "http://localhost:4000" , Copy how do you test your proxy? using fetch / ajax / browser direct to url? the proxy in create react app only works when it's a fetch or ajax request. I've even installed http-proxy-middleware and create a setupProxy. I'm using create-react-app with an express backend. I have "proxy": "http://localhost:3001" in my package. Also, ensure that the server is . js, but with no luck. This is Know the common scenarios where a React proxy is used, troubleshoot React proxies when they are not working, and how to set up a React proxy in your project. 0 it works fine. json and the api works perfectly. If I change the version of http-proxy-middleware to 0. json and node_modules in React app; Turn off React Terminal and npm install all dependencies again on React App; Turn back on React App and the proxy should now be working I've used "proxy": "http://localhost:8080" in my package. Also, ensure that the server is I use create-react-app to bootstrap my react app, I did this in my package. json for numerous other CRA projects to connect to my Express backend with no issues. Delete package-lock. 21. The reason the react application is still pointing at localhost:8080 is because of cache. wqa obuk adrkn gnini ybfbokt hbavj guwk mvosewe glgkkt axidk