Debugging CORS Issues
If CORS errors persist, try following:
- Checking the Browser Console: Dive into the browser console for a closer look at the CORS error messages.
- Verifying API Headers: We can use tools like postman or curl to check the headers are set correctly by sending http requests through them.
- Reviewing Server Logs: Server log is history book, that records each event. If preflight or actual request is blocked then log tells the issue and provide insights that are needed to solve the persisted problem.
How to Fix CORS Errors in Next.js and Vercel?
Cross-Origin Resource Sharing (CORS) is a security feature that restricts web apps from making requests to a different domain than the one that served the web page to it. This is needed for security, although sometimes it can block legitimate requests, especially when working with APIs. In this article, we will learn fixing the CORS errors in the Next.js application deployed on Vercel.