Resolving the res.status is undefined Error in Next.js Using next-connect

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Understanding the Problem

The error you're facing indicates that the response object (res) does not have a defined status method. This is often the case when the middleware is not utilized correctly in the routing process. Let's break down how this issue can arise and how we can avoid it.

The Custom Error Middleware

Firstly, let's take a look at a typical implementation of our custom error middleware:

[[See Video to Reveal this Text or Code Snippet]]

Common Mistakes

Incorrect Middleware Usage: When declaring your routes, if you do not specify the error handler within the initialization of next-connect, the response object will not have the necessary methods defined.

Solution Steps: Implementing Correct Middleware

To properly use the error middleware, you should define it during the creation of the next-connect router. Here’s how to implement it successfully:

Step 1: Modify Router Initialization

Instead of chaining use of middleware after defining the routes, initialize your router with the onError option set to your errorMiddleWare. Here’s an updated version of your router setup:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Test Your Changes

Conclusion