Warning: require_once(datenbank.php): failed to open stream: No such file or directory in /var/www/localhost/htdocs/wand/php/cms.php on line 20

Fatal error: require_once(): Failed opening required 'datenbank.php' (include_path='.:/usr/share/php7:/usr/share/php') in /var/www/localhost/htdocs/wand/php/cms.php on line 20