Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit' not found in /var/www/html/portal/vendor/PhpOffice/phpspreadsheet/src/PhpSpreadsheet/Shared/Trend/PolynomialBestFit.php:7 Stack trace: #0 {main} thrown in /var/www/html/portal/vendor/PhpOffice/phpspreadsheet/src/PhpSpreadsheet/Shared/Trend/PolynomialBestFit.php on line 7