Why Does Laravel Throw a "file_put_contents(): failed to open stream: Permission denied" Error?

File Permission Issues in Laravel: "file_put_contents() Failed to Open Stream"

Encountering the "file_put_contents(): failed to open stream: Permission denied" error in Laravel can be frustrating. This issue arises when Laravel is unable to write to specific files or directories due to insufficient file permissions.

The storage directory, where Laravel stores logs, cache, and other important data, often causes this error. To resolve it, let's explore different solutions.

Resolving the Issue

According to vsmoraes, the following sequence of commands can resolve the permission-related issues:

For Laravel >= 5.4:

<code class="sh">php artisan cache:clear
chmod -R 775 storage/
composer dump-autoload</code>

For Laravel < 5.4:

<code class="sh">php artisan cache:clear
chmod -R 775 app/storage
composer dump-autoload</code>

These commands perform the following tasks:

1. Clear the application cache to remove any corrupted or outdated cached files.
2. Change the permissions of the storage directory to 775, allowing the web server to write to it.
3. Run Composer to update the autoloader and reflect the changes in file permissions.

Once you have executed these commands, the "file_put_contents(): failed to open stream: Permission denied" error should no longer appear. If you continue to face issues, check the file permissions of specific files within the storage directory, such as the "meta/services.json" file mentioned in your question. Ensure the files have the appropriate permissions (e.g., 644) to allow the Laravel application to read and write to them.

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