Fatal error: Uncaught Error: Interface "PHPExcel_RichText_ITextElement" not found in /var/www/erp/PHPExcel-1.8-/Classes/PHPExcel/RichText/TextElement.php:26
Stack trace:
#0 {main}
thrown in /var/www/erp/PHPExcel-1.8-/Classes/PHPExcel/RichText/TextElement.php on line 26