Fatal error: Uncaught Error: Interface "PHPExcel_IComparable" not found in D:\laragon\laragon\www\old\back10jul\promocion-old\plugins\PHPExcel\Style\Conditional.php:36 Stack trace: #0 {main} thrown in D:\laragon\laragon\www\old\back10jul\promocion-old\plugins\PHPExcel\Style\Conditional.php on line 36