Unable to create lockable file - Laravel 8 & PHP 8
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Laravel, the popular open-source web application framework, has been successfully deployed with various versions of PHP for many years. However, with the arrival of PHP 8, some project managers and developers have encountered a specific challenge that disrupts their Laravel 8 projects under Vagrant. The error message is clear: Unable to create lockable file: /var/www/html/storage/framework/cache/.... Please ensure you have permission to create files in this location.
The issue with PHP 8 seems to be related to the framework's cache system and its interaction with the underlying operating system. It is crucial for developers to understand the problem and apply suitable solutions to remedy it. Before attempting any fixes, ensure that you are using the latest version of Laravel 8 and have updated your dependencies.
Possible causes
- Incorrect file system permissions:chmod -R 777 storage, even though it might not be the safest option.
- An issue with Vagrant:
- Inconsistent locking mechanism:
Possible solutions
After determining the cause of the error, you can try these potential fixes:
- Upgrade your PHP version to the latest release or a newer stable build that is compatible with PHP 8. This could solve compatibility issues with Laravel and other third-party packages.
- Check if the issue persists when running your application locally without Vagrant. If it does not, this might indicate an incompatibility between your Vagrant setup and PHP 8.
- Update any third-party packages that could be conflicting with your Laravel project or your PHP version. Ensure you follow the documentation for compatibility information and recommended practices.