Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit' not found in C:\xampp7\htdocs\edgpens\extension\PhpSpreadsheet-master\src\PhpSpreadsheet\Shared\Trend\LinearBestFit.php:5 Stack trace: #0 {main} thrown in C:\xampp7\htdocs\edgpens\extension\PhpSpreadsheet-master\src\PhpSpreadsheet\Shared\Trend\LinearBestFit.php on line 5