Warning: require_once(/app/vendor/autoload_runtime.php): Failed to open stream: No such file or directory in /app/public/index.php on line 5

Fatal error: Uncaught Error: Failed opening required '/app/vendor/autoload_runtime.php' (include_path='.:/usr/local/lib/php') in /app/public/index.php:5
Stack trace:
#0 {main}
  thrown in /app/public/index.php on line 5