Fatal error: Uncaught Error: Class 'PHPExcel_Writer_OpenDocument_WriterPart' not found in /home/app/htdocs/lidia/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/OpenDocument/Thumbnails.php:37
Stack trace:
#0 {main}
thrown in /home/app/htdocs/lidia/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/OpenDocument/Thumbnails.php on line 37