Fatal error: Uncaught Error: Interface 'PHPExcel_RichText_ITextElement' not found in C:\Apache24\htdocs\PortalUIS_bkp\excel\Spreadsheet\Excel\Classes\PHPExcel\RichText\TextElement.php:34 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\PortalUIS_bkp\excel\Spreadsheet\Excel\Classes\PHPExcel\RichText\TextElement.php on line 34