Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Conditional.php:7 Stack trace: #0 {main} thrown in /home/apolo/public_html/sgdpr/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Conditional.php on line 7