Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Chart\Properties' not found in C:\Apache24\htdocs\cwlms\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Chart\DataSeriesValues.php:10 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwlms\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Chart\DataSeriesValues.php on line 10