Warning: require(/var/www/html/vendor/autoload.php): Failed to open stream: No such file or directory in /var/www/html/config/common.php on line 5

Fatal error: Uncaught Error: Failed opening required '/var/www/html/vendor/autoload.php' (include_path='.:/usr/local/lib/php') in /var/www/html/config/common.php:5 Stack trace: #0 /var/www/html/config/database.php(87): require() #1 /var/www/html/include/head.php(15): require_once('/var/www/html/c...') #2 /var/www/html/dash.php(1): require('/var/www/html/i...') #3 {main} thrown in /var/www/html/config/common.php on line 5