DHTMLX Spreadsheet: RuntimeError: unreachable

When we’re importing the below file via the import option it seems to be failing with the following error.

It seems to not work on the official website demo also: JavaScript Spreadsheet Library - DHTMLX Spreadsheet

This doesn’t work when the file is created via OpenXML or any other coded solution however if we open the file via excel and save it seems to be working.

Generate-OpenXML.xlsx (2.2 KB)