Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in E:\www\frey\qgmvc\v1.0\composer\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\Worksheet.php:28 Stack trace: #0 {main} thrown in E:\www\frey\qgmvc\v1.0\composer\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\Worksheet.php on line 28