Error in IE 9

Hello,

I am using your plugin on this site: https://www.cityscapesinc.com/. You can see it in the bottom right corner.

Only in IE 9 (not testing 9 or below) the buttons will not work on the product pages, which are using a plugin called Essential Grid in the main content area.

Product pages:
https://www.cityscapesinc.com/envisor/
https://www.cityscapesinc.com/covrit/
https://www.cityscapesinc.com/plankwall/
https://www.cityscapesinc.com/toughgate/
https://www.cityscapesinc.com/naturescreen/

I can see via developer tools that there is an error on line 1 of page.js. This error does not occur on other pages.

Any insight on what the issue could be?

Thank you,
Sarah

https://www.ads-software.com/plugins/add-to-any/