Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in /export/vol2/httpd/htdocs/administration/facilities/webapps/includes/PHPSpreadsheet/Comment.php:7
Stack trace:
#0 {main}
  thrown in /export/vol2/httpd/htdocs/administration/facilities/webapps/includes/PHPSpreadsheet/Comment.php on line 7