Fatal error: Uncaught Error: Class 'PHPExcel_Writer_Abstract' not found in /home/admin2bannerworl/public_html/admin2.bannerworld.co.uk/vendor-old/phpoffice/phpexcel/Classes/PHPExcel/Writer/OpenDocument.php:28
Stack trace:
#0 {main}
thrown in /home/admin2bannerworl/public_html/admin2.bannerworld.co.uk/vendor-old/phpoffice/phpexcel/Classes/PHPExcel/Writer/OpenDocument.php on line 28