Posted 12 January 2020, 11:01 pm EST
Dears:
I have tried your ExcelIO code by following instructions from https://www.grapecity.com/demos/spread/JS/TutorialSample/Features/ClientSideExcelIO/excelIO/purejs/excel2016colorful
on my local computer.
Import function works fine, and export function occurs JavaScript error as attachment.
I have use same file on your online demo, either import or export function works fine.
Colud you help to solve the issue ?

