Fatal error
: Uncaught Error: Interface "PHPExcel_IComparable" not found in /d2/httpd/php/PHPExcel-1.8/Classes/PHPExcel/Comment.php:28 Stack trace: #0 {main} thrown in
/d2/httpd/php/PHPExcel-1.8/Classes/PHPExcel/Comment.php
on line
28