I'm experiencing the following error, when I try to use "fromFile" function to load the data for a spreadsheet component from an excel file:
"The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide."
The problem seems to be in the version of JSZip library, which the component uses. I manually changed the version of "JSZip" script to 2.6 and it works fine, but I want to know how to do it using the latest version of the spreadsheet component and the latest version of "JSZip". I used the same file in the demo page in your site and it works fine there. The version of kendo is "2020.1.406".