Fail to read session data Error

Hi guys,

Just downloaded the plugin and activated. I’m getting this error come across my back-end dashboard and front end of the site:

Warning: session_start(): Failed to read session data: user (path: /tmp) in /home/pwktest3/public_html/wp-content/plugins/custom-registration-form-builder-with-submission-manager/registration_magic.php on line 186

Can you please help?

Thanks,

Eric