Warning: session_start(): Failed to read session data: user (path: /var/www/ud02_13/phptmp) in /var/www/ud02_13/html/neue/libraries/joomla/session/session.php on line 665

Fatal error: Cannot use Joomla\String\String as String because 'String' is a special class name in /var/www/ud02_13/html/neue/libraries/vendor/joomla/registry/src/Format/Json.php on line 12