PHP Security Config error: session.cookie_secure must be 'on'

Modify this setting in 'sites-enabled/grommunio-web'

grommunio Web can't start because of incompatible configuration.

Please correct above errors, a good start is by checking your 'php.ini' file.

You can disable this configuration check by editing the file '/usr/share/grommunio-web/config.php', but this is not recommended.