Error: Unable to start session. Please check that the web server has enough permission to write to these files/directories:
For example, on a Linux server if your Apache httpd user
is www-data, you can try to execute:
chown -R www-data:www-data /var/www/clients/client2/web1/web/piwik/tmp/sessions/chmod -R 0755 /var/www/clients/client2/web1/web/piwik/tmp/sessions/
If you still experience issues after trying these changes,
we recommend that you enable database session storage.
Debug: the original error was Zend_Session::start() - /var/www/clients/client2/web1/web/piwik/libs/Zend/Session.php(Line:469): Error #2 session_start(): open(/var/www/clients/client2/web1/web/piwik/tmp/sessions/sess_bgf5nbbgdtm0jd39codcfd9bj2, O_RDWR) failed: Permission denied (13) Array /var/www/clients/client2/web1/web/piwik/libs/Zend/Session.php(Line:479): Error #2 session_write_close(): open(/var/www/clients/client2/web1/web/piwik/tmp/sessions/sess_bgf5nbbgdtm0jd39codcfd9bj2, O_RDWR) failed: Permission denied (13) Array /var/www/clients/client2/web1/web/piwik/libs/Zend/Session.php(Line:479): Error #2 session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/www/clients/client2/web1/web/piwik/tmp/sessions) Array