How to Fix the 404 URL Not Found Error for Symfony API Docs on Live Server

Описание: Troubleshooting the `404 URL Not Found` issue for Symfony API documentation on live servers. Learn how to configure your `.htaccess` file correctly for a seamless deployment!
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This video is based on the question https://stackoverflow.com/q/68676122/ asked by the user 'yukitmp' ( https://stackoverflow.com/u/14052499/ ) and on the answer https://stackoverflow.com/a/68688117/ provided by the user 'Patrick G.' ( https://stackoverflow.com/u/12285928/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting Symfony API Documentation Route Issues on Live Server

When deploying a Symfony application, it's not uncommon to encounter issues that only arise in a production environment. One such frustrating problem developers often face is a 404 URL Not Found error for routes that work perfectly on localhost. In this article, we'll specifically address the issue of the /api/doc route showing a 404 error on a live server but functioning well during local development.

Understanding the Problem

Imagine you've successfully developed your Symfony 5 application and tested it locally without any hiccups. But upon deployment to your live server, suddenly, the homepage and API documentation route return 404 URL Not Found errors. What gives?

Initial Issue: The homepage (index.php) showed a 404 on your live server.

First Fix: You executed a command to create a symlink with ln -s public_src public to correct the homepage issue.

Current Issue: After deploying the NelmioApiDocBundle for API documentation, the route /api/doc is still showing a 404 on the live server.

Solution to the 404 URL Not Found Error

The essential fix to resolving the API documentation route issue lies in configuring the .htaccess file correctly within the public folder of your Symfony application. This is a crucial step that can often be overlooked during deployment.

Steps to Fix the Issue

Locate the .htaccess File: Ensure you have a .htaccess file in the public directory of your Symfony app. This file is responsible for directing HTTP requests correctly.

Edit the .htaccess File:

Open the .htaccess file in a text editor.

Ensure you have the standard rewrite rules set up, similar to the following:

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

Check for Symlink Issues:

Verify any symlink you created. Confirm that the public directory is accessible and functioning as intended.

Clear the Cache: It's always wise to clear the cache after making changes to your configuration. You can run the following command in your Symfony project root:

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

Verify Web Server Configurations: Ensure that your web server (like Apache or Nginx) is properly configured to handle URL rewriting.

Summary

By ensuring that your .htaccess file is set up correctly and confirming your server configurations, you can resolve the 404 URL Not Found issue for the /api/doc route on your live Symfony server. This process might seem simple, but overlooking these details can often lead to frustrating deployment hurdles.

If you still experience issues after making the changes, review your server logs for any additional clues, and ensure that all dependencies are correctly installed and configured.

Implementing these solutions will help you achieve a seamless experience for your Symfony application on both local and production environments.