Warning: require_once(/app/vendor/autoload.php): Failed to open stream: No such file or directory in /app/web/wp-config.php on line 8

Fatal error: Uncaught Error: Failed opening required '/app/vendor/autoload.php' (include_path='.:/usr/local/lib/php') in /app/web/wp-config.php:8 Stack trace: #0 /app/web/wp/wp-load.php(55): require_once() #1 /app/web/wp/wp-blog-header.php(13): require_once('/app/web/wp/wp-...') #2 /app/web/index.php(7): require('/app/web/wp/wp-...') #3 {main} thrown in /app/web/wp-config.php on line 8