During installation, exception SessionHandler::read()
This article provides a fix for an exception SessionHandler::read() error during Adobe Commerce installation.
At the last step of installing Adobe Commerce, the following exception displays:
exception 'Exception' with message 'Warning: SessionHandler::read():
open(..) failed: No such file or directory (2) ../magento2/lib/internal/Magento/Framework/Session/SaveHandler.php on line 74'
This error occurs only in code versions earlier than September 28, 2015. If you install code dated September 29 or later, this error should not occur. For more information about configuration options for Redis, see Configure Redis in our developer documentation. For more information about specifying Redis using the command-line installer, see the installation topic or the deployment configuration topic in our developer documentation.
This happens when your
session.save_handler PHP parameter is set to some another session storage than
files (for example,
memcached, and so on). This is a known issue we're working to resolve.
php.ini by entering the following command:
php -i | grep "Loaded Configuration File"
Typical locations follow:
- As a user with
root privileges, open
php.ini in a text editor.
- Set it in any of the following ways:
To comment it out:
;session.save_path = <path>
To set it to a file system path:
session.save_handler = files