Fatal error: Uncaught Error: Undefined constant "PHPEXCEL_ROOT" in C:\laragon\www\siesicis\vendor\phpoffice\phpexcel\Classes\PHPExcel\Shared\trend\logarithmicBestFitClass.php:29
Stack trace:
#0 {main}
thrown in C:\laragon\www\siesicis\vendor\phpoffice\phpexcel\Classes\PHPExcel\Shared\trend\logarithmicBestFitClass.php on line 29