Fatal error: Uncaught Error: Class 'PHPExcel_Style_Supervisor' not found in C:\xampp\htdocs\enercard\vendor\phpoffice\phpexcel\Classes\PHPExcel\Style\Alignment.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\phpoffice\phpexcel\Classes\PHPExcel\Style\Alignment.php on line 27