Warning: include_once(app/init.php): failed to open stream: No such file or directory in /___del_newsletter.php on line 2

Warning: include_once(): Failed opening 'app/init.php' for inclusion (include_path='.:/:/usr/local/php74/lib/pear') in /___del_newsletter.php on line 2

Fatal error: Uncaught Error: Call to undefined function redirect() in /___del_newsletter.php:23 Stack trace: #0 {main} thrown in /___del_newsletter.php on line 23