Fatal error: Uncaught Error: Class "PHPExcel_Style_Supervisor" not found in E:\www\ypmvc\3.0\mvc\composer\vendor\phpoffice\phpexcel\Classes\PHPExcel\Style\Alignment.php:27 Stack trace: #0 {main} thrown in E:\www\ypmvc\3.0\mvc\composer\vendor\phpoffice\phpexcel\Classes\PHPExcel\Style\Alignment.php on line 27