Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Chart\Properties' not found in /home/edmedu/www/edmclass.com/admin.edmclass.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Chart/TrendLine.php:5 Stack trace: #0 {main} thrown in /home/edmedu/www/edmclass.com/admin.edmclass.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Chart/TrendLine.php on line 5