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