What are some common errors in Express.js and how can I fix them?

What are some common errors I might encounter when using Express.js?

Some common errors in Express.js include 404 Not Found, 500 Internal Server Error, and middleware issues.

Can you explain how to fix a 404 Not Found error?

A 404 Not Found error usually means that the route is not defined. Ensure that your route handlers are correctly set up.

What about handling 500 Internal Server Errors?

For 500 Internal Server Errors, check your server logs for stack traces and ensure your code is error-free.

Are there any best practices to avoid these errors?

Yes, always validate user input, use proper error handling middleware, and keep your dependencies updated.