@ZinkDifferent, was getting the same error on a clean Debian 8 build. Worked around it by removing the ?? lines here.
/var/www/22222/htdocs/vimbadmin/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/Mysqli/MysqliConnection.php
on line 293"
Like this...
$this->_conn->ssl_set(
$params['ssl_key'],
$params['ssl_cert'],
$params['ssl_ca'],
$params['ssl_capath'],
$params['ssl_cipher']
);
}
Was then able to reach the admin screen asking for the salt.
Obviously hacking the core code isn't a great idea... Should I submit a pull request with the mods that I made?