Warning: require_once(./vendor/autoload.php): Failed to open stream: No such file or directory in /home/ibrita/public_html/classes/Email.php on line 8

Fatal error: Uncaught Error: Failed opening required './vendor/autoload.php' (include_path='.:/opt/alt/php82/usr/share/pear:/opt/alt/php82/usr/share/php:/usr/share/pear:/usr/share/php') in /home/ibrita/public_html/classes/Email.php:8 Stack trace: #0 /home/ibrita/public_html/application.php(17): require_once() #1 {main} thrown in /home/ibrita/public_html/classes/Email.php on line 8