Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Writer\Xlsx\WriterPart" not found in /var/www/html/EuriSoftCom/servidor-angular/vendor 8.2 NOT/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xlsx/RelsRibbon.php:9 Stack trace: #0 {main} thrown in /var/www/html/EuriSoftCom/servidor-angular/vendor 8.2 NOT/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xlsx/RelsRibbon.php on line 9