Warning: require_once(../../vendor/autoload.php): Failed to open stream: No such file or directory in /home17/demo/public_html/index.php on line 3

Fatal error: Uncaught Error: Failed opening required '../../vendor/autoload.php' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /home17/demo/public_html/index.php:3 Stack trace: #0 {main} thrown in /home17/demo/public_html/index.php on line 3