Error message

In my dashboard I keep getting the following message:

Redux Framework Warning
select2-js CDN unavailable. Some controls may not render properly. Please wait a few minutes, then try refreshing the page. Unable to load some remotely hosted scripts..

What does this mean and how can I correct it?

http://www.shimmyshack.com

Thanks
Sue

https://ww.wp.xz.cn/plugins/redux-framework/