Warning: main(includes/application_top.php): failed to open stream: No such file or directory in /index.php on line 6

Warning: main(includes/application_top.php): failed to open stream: No such file or directory in /index.php on line 6

Fatal error: main(): Failed opening required 'includes/application_top.php' (include_path='.:/usr/local/php/pear5') in /index.php on line 6