An issue arises when attempting to fetch data using next.js: a TypeError occurs indicating that

I'm currently working on setting up a next.js website integrated with strapi, but I've encountered an issue with my fetch request. Oddly enough, when I test the request using Postman, the data is successfully returned, indicating that the endpoint is correct.

The error message I receive in my console is TypeError: fetch failed.

TypeError: fetch failed
    at Object.fetch (node:internal/deps/undici/undici:11118:11)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  cause: Error: connect ECONNREFUSED 127.0.0.1:1337
      at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1300:16) {
    errno: -111,
    code: 'ECONNREFUSED',
    syscall: 'connect',
    address: '127.0.0.1',
    port: 1337
  }
}

Within my page template file, I have the following code:

import React from "react";

import Layout from "@/components/Layout/Layout";
import { fetcher } from "@/lib/api";

const Insights = () => {
  return (
    <Layout>
      <p>Insights</p>
    </Layout>
  );
};

export default Insights;

export async function getServerSideProps() {
  const insightsResponse = await fetcher(
    "http://localhost:1337/api/insights"
  );
  return {
    props: {
      insights: insightsResponse,
    },
  };
}

The fetcher function responsible for fetching the data is defined as follows:

export async function fetcher(url: string, options = {}) {
  let response;

  if (!options) {
    response = await fetch(url);
  } else {
    response = await fetch(url, options);
  }

  const data = await response.json();

  return data;
}

Answer №1

Replace 'localhost' with 127.0.0.1 for successful execution

Answer №2

check out this video on Codegrepper for more informationThis issue arises when you are using node version 18 or higher, where fetch is provided by node. To resolve this, you need to use a node version that is below 18 in order for fetch to work within getServerSideProps. Consider using nvm to manage the desired node version.

Alternatively, instead of changing the node version, you can provide the full URL path for fetching data. For example, instead of /api/listings/property_type, use http://localhost:3000/api/listings/property_type

Answer №3

During my experience building a next.js 13 full stack app for production (using npx next build), I encountered a similar issue that was not present during development (npx next dev).

The problem stemmed from attempting to call an API endpoint within the same app in the server component. It became clear that the frontend cannot make a successful call to a non-responsive server.

To remedy this, consider fetching data directly within the server component without relying on internal API GET endpoints.

Answer №4

After utilizing a VPN, the issue mysteriously vanished for me. Perhaps this solution could be beneficial to others experiencing similar problems.

Answer №5

When I was creating a docker image with NextJs, I encountered a similar issue. To resolve it, I decided to update the dockerfile to the most recent version available at this link (https://example.com/dockerfile/latest). After doing so, the issue disappeared completely.

Answer №6

Encountering a similar problem with my local node server, I managed to resolve it by incorporating the NODE_TLS_REJECT_UNAUTHORIZED=0 flag when running the server. The SSL issue stemmed from my GraphQL server utilizing a self-signed certificate, which caused compatibility challenges within Node.JS.

Answer №7

During the process of building a nextjs(13.4.13) project for production, I encountered a similar issue. Everything worked smoothly when testing locally with yarn start, but complications arose upon deployment.

After upgrading from 13.3.4 to 13.4.13, I maintained the same dockerfile for both building and running the project.


The fix turned out to be quite straightforward:

I simply inserted ENV HOSTNAME "0.0.0.0" before the line

CMD ["node", "server.js"]
, following the guidance provided in the official Dockerfile for nextjs

Answer №8

After encountering the same issue, I decided to update my package versions and voila! Problem solved!
Seems like the Nextjs app router has finally stabilized!

Here is a snippet from my old package json:

{
  "name": "abdolmaleki-next",
  "version": "0.1.0",
  "private": true,
  ...

And here's an excerpt from my new package.json :

{
  "name": "abdolmaleki-next",
  "version": "0.1.0",
  "private": true,
  ...

If you're facing similar issues, I recommend running npx create-next-app@latest again.

Answer №9

While working with Docker, I encountered a situation where fetching data from another container using Docker Compose was not successful even after changing the URL to 127.0.0.1. After some troubleshooting, I realized that switching the URL to

http://<container_name>:<port>/...
was the key to resolving the issue. This adjustment was necessary because the request being made was server-side rather than client-side. It's worth noting that sending a request to localhost results in the request being contained within its own container.

Answer №10

Have you tried opening the Development tools to check the response code? If you see ECONNREFUSED, it means the server has refused the request. Ensure that you are requesting the correct data (you can also verify this in the Network Tab)

For more information, please consult this guide https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch

When using fetch, consider additional options like method and headers (headers are crucial). Include these request options and test again.

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