Fatal error: Uncaught Error: Class 'PHPExcel_Chart_Properties' not found in C:\xampp\htdocs\aroflo-dataforce\vendor\phpoffice\phpexcel\Classes\PHPExcel\Chart\GridLines.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\aroflo-dataforce\vendor\phpoffice\phpexcel\Classes\PHPExcel\Chart\GridLines.php on line 10