Fatal error: Uncaught Error: Interface 'PhpOffice\PhpSpreadsheet\IComparable' not found in D:\xampp\htdocs\psp\backend\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\Worksheet.php:34 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\Worksheet.php on line 34