Solved: failed to open stream: No such file or directory in composer autoload_real.php in Magento 2

In this post, find the 100% working solution to ‘No such file or directory in composer autoload_real.php‘ in Magento 2.

Magento 2 (Adobe Commerce) is leader in customizable eCommerce platforms. It uses Composer to manage all the required packages, libraries and classes in the core code. It act as a dependency manager for Magento platform, and plays a crucial role in the development process.

Composer generates autoload_real.php file, which contains addresses of all the dependencies of the PHP project. In many cases, the Magento 2 may throw the following error, if the file is not found:

failed to open stream: No such file or directory in composer autoload_real.php

The complete error looks like this…

Well, there can be various reasons why autoload_real.php is not found by Magento 2 instance, such as accidently deletion of the file or because of recently upgraded composer version.

The error needs no explanation. 🤷‍♂️

It simply means that there is some issue retrieving autoload_real.php file, and therefore the dependencies of the PHP project have not been loaded. The straightforward method to solve this issue in Magento 2 described here. In other case, you can bypass dependency error while installing an extension/library using composer in Magento 2.

Let’s see the complete method to solve the ‘failed to open stream: No such file or directory in composer autoload_real.php’ error in Magento 2. Likewise you may also find a solution for “Failed to Open Stream Error While Compiling PluginListGenerator.php in Magento 2.4.1” which error is being faced by developers while migrating, upgrading, customizing or performing any operations on the Magento 2 store.

Solution to No such file or directory in composer autoload_real.php in Magento 2

Now, we know that composer is not able to retrieve the autoload_real.php file.

In this case, we need to regenerate it by using the following command:

This will regenerate the autoload_real.php file and will solve the no such file or directory in composer autoload_real.php error in Magento 2.

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