Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in C:\Apache24\htdocs\cw\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Style\Conditional.php:8 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cw\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Style\Conditional.php on line 8