Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Shared\Trend\BestFit" not found in /home/romafi/cofortest/php/php-spreadsheet/src/PhpSpreadsheet/Shared/Trend/PolynomialBestFit.php:11 Stack trace: #0 {main} thrown in /home/romafi/cofortest/php/php-spreadsheet/src/PhpSpreadsheet/Shared/Trend/PolynomialBestFit.php on line 11