Warning: require_once(/vendor/autoload.php): Failed to open stream: No such file or directory in /var/www/install.sdpd/install/src/controllers/DictionaryController.php on line 4

Fatal error: Uncaught Error: Failed opening required '/vendor/autoload.php' (include_path='.:/opt/remi/php83/root/usr/share/pear:/opt/remi/php83/root/usr/share/php:/usr/share/pear:/usr/share/php') in /var/www/install.sdpd/install/src/controllers/DictionaryController.php:4 Stack trace: #0 /var/www/install.sdpd/install/router.php(6): require_once() #1 /var/www/install.sdpd/install/router.php(33): call() #2 /var/www/install.sdpd/index.php(17): require_once('...') #3 {main} thrown in /var/www/install.sdpd/install/src/controllers/DictionaryController.php on line 4