Warning: require_once(autoload.php): failed to open stream: No such file or directory in C:\Apache24\htdocs\drupal\core\assets\scaffold\files\index.php on line 14

Fatal error: require_once(): Failed opening required 'autoload.php' (include_path='.;C:\php\pear') in C:\Apache24\htdocs\drupal\core\assets\scaffold\files\index.php on line 14