Fatal error: Uncaught Error: Undefined constant "PHPEXCEL_ROOT" in /home/aplikasiposinfo/public_html/reswara.samarinda.app/vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/trend/exponentialBestFitClass.php:29 Stack trace: #0 {main} thrown in /home/aplikasiposinfo/public_html/reswara.samarinda.app/vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/trend/exponentialBestFitClass.php on line 29