Fatal error: Uncaught Error: Interface 'Box\Spout\Reader\ReaderInterface' not found in E:\xampp\htdocs\www\qr250\vendor\box\spout\src\Spout\Reader\ReaderAbstract.php:17 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\qr250\vendor\box\spout\src\Spout\Reader\ReaderAbstract.php on line 17