Fatal error: Uncaught Error: Interface "PHPExcel_IComparable" not found in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/Conditional.php:36
Stack trace:
#0 {main}
thrown in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/Conditional.php on line 36