this plugin is not as solid as the others

Warning: session_start() [function.session-start]: open(redis-01.iserve.net.nz:6379/sess_483ed8ec6e4b50061c4c124155214e37, O_RDWR) failed: No such file or directory (2) in /var/users/myusername/mywebsite.com/htdocs/wp-content/miwi/framework/session/session.php on line 250