Fatal error: Uncaught Error: Class "PHPExcel_Writer_OpenDocument_WriterPart" not found in C:\laragon\www\siesicis\vendor\phpoffice\phpexcel\Classes\PHPExcel\Writer\OpenDocument\Styles.php:37
Stack trace:
#0 {main}
thrown in C:\laragon\www\siesicis\vendor\phpoffice\phpexcel\Classes\PHPExcel\Writer\OpenDocument\Styles.php on line 37