Warning: require_once(db.php): failed to open stream: No such file or directory in /opt/www/internett/javascript/ajax/autocomplete/response.php on line 4

Fatal error: require_once(): Failed opening required 'db.php' (include_path='.:/usr/share/pear:/usr/share/php') in /opt/www/internett/javascript/ajax/autocomplete/response.php on line 4