Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Writer\BaseWriter' not found in C:\Apache24\htdocs\cwlms\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Writer\Html.php:29 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwlms\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Writer\Html.php on line 29