Fatal error: Uncaught Error: Undefined constant "PHPEXCEL_ROOT" in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpexcel/Classes/PHPExcel/Autoloader.php:70
Stack trace:
#0 /home/apolo/public_html/sgdpr/vendor/phpoffice/phpexcel/Classes/PHPExcel/Autoloader.php(11): PHPExcel_Autoloader::load('PHPExcel_Shared...')
#1 {main}
thrown in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpexcel/Classes/PHPExcel/Autoloader.php on line 70