Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in /var/www/erp/PhpSpreadsheet-master/src/PhpSpreadsheet/Worksheet/Worksheet.php:32
Stack trace:
#0 {main}
thrown in /var/www/erp/PhpSpreadsheet-master/src/PhpSpreadsheet/Worksheet/Worksheet.php on line 32