Warning: require(public/validation.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\PHP\project-DuAn\ShopingCart\index.php on line 9

Fatal error: Uncaught Error: Failed opening required 'public/validation.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\PHP\project-DuAn\ShopingCart\index.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\PHP\project-DuAn\ShopingCart\index.php on line 9