SSR error Next.js

Why This Happens

In Next.js, an error occurred during server-side rendering. This is one of the most common Next.js errors developers encounter. Understanding the root cause helps you fix it quickly and prevent it from recurring.

The Problem

export default async function Page() {
  const data = await fetch(badUrl);
  return <div>{data.json()}</div>;
}

The Fix

export default async function Page() {
  try {
    const res = await fetch(url);
    const data = await res.json();
    return <div>{data.name}</div>;
  } catch {
    return <div>Error loading data</div>;
  }
}

Step-by-Step Fix

1. 1

   Identify the error

   Look at the error message: Error during SSR/SSG. This tells you exactly what went wrong.

2. 2

   Find the cause

   Check the stack trace to find which line of your Next.js code triggered this error.

3. 3

   Apply the fix

   Use the corrected code pattern shown above. Test to confirm the error is resolved.