Fatal error: Uncaught Error: Interface 'PhpOffice\PhpSpreadsheet\IComparable' not found in /home/flexinettek/public_html/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Supervisor.php:9 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Supervisor.php on line 9