Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit" not found in /var/www/erp/spreadsheet/src/PhpSpreadsheet/Shared/Trend/LinearBestFit.php:27 Stack trace: #0 {main} thrown in /var/www/erp/spreadsheet/src/PhpSpreadsheet/Shared/Trend/LinearBestFit.php on line 27