Warning: require(./wp-blog-header.php): Failed to open stream: No such file or directory in /www/wwwroot/MU/Website/index.php on line 7

Fatal error: Uncaught Error: Failed opening required './wp-blog-header.php' (include_path='.:') in /www/wwwroot/MU/Website/index.php:7 Stack trace: #0 {main} thrown in /www/wwwroot/MU/Website/index.php on line 7