Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Writer\Xlsx\WriterPart" not found in /home/c2ub0z1g/public_html/api.certificados.colegiodeoptometristas.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xlsx/RelsRibbon.php:9 Stack trace: #0 {main} thrown in /home/c2ub0z1g/public_html/api.certificados.colegiodeoptometristas.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xlsx/RelsRibbon.php on line 9