Warning: require_once(/app/vendor/composer/autoload_real.php): Failed to open stream: No such file or directory in /app/vendor/autoload.php on line 20

Fatal error: Uncaught Error: Failed opening required '/app/vendor/composer/autoload_real.php' (include_path='.:/usr/local/lib/php') in /app/vendor/autoload.php:20 Stack trace: #0 /app/public/index.php(14): require() #1 {main} thrown in /app/vendor/autoload.php on line 20