Warning: require_once(left_menu.php?mode=pc): failed to open stream: No such file or directory in /home/silvercougar6/www/site_map.php on line 3

Fatal error: require_once(): Failed opening required 'left_menu.php?mode=pc' (include_path='.:/usr/local/php/7.4/lib/php') in /home/silvercougar6/www/site_map.php on line 3