Fatal error: Uncaught Error: Class 'Box\Spout\Common\Exception\SpoutException' not found in E:\xampp\htdocs\www\qr251\vendor\box\spout\src\Spout\Common\Exception\EncodingConversionException.php:8 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\qr251\vendor\box\spout\src\Spout\Common\Exception\EncodingConversionException.php on line 8