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