Warning: require(/app/public/wp-blog-header.php): Failed to open stream: No such file or directory in /app/public/index.php on line 2

Fatal error: Uncaught Error: Failed opening required '/app/public/wp-blog-header.php' (include_path='.:/usr/local/lib/php') in /app/public/index.php:2 Stack trace: #0 {main} thrown in /app/public/index.php on line 2