Warning: require(/home/www/drupal8/drupal-9.1.5/vendor/autoload.php): Failed to open stream: No such file or directory in /home/www/drupal8/drupal-9.1.5/autoload.php on line 16

Fatal error: Uncaught Error: Failed opening required '/home/www/drupal8/drupal-9.1.5/vendor/autoload.php' (include_path='.:/etc/phpnet/php/83/lib/php') in /home/www/drupal8/drupal-9.1.5/autoload.php:16 Stack trace: #0 /home/www/drupal8/drupal-9.1.5/index.php(14): require_once() #1 {main} thrown in /home/www/drupal8/drupal-9.1.5/autoload.php on line 16