script error message

I've been getting this error message when I open the customizer: " A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue. Script: http://explorationvacation.net…,media-views,suggest&ver=4.7.1:38 " I updated my theme a few weeks ago, hoping that would solve the problem, but it didn't. I'm on Firefox using Catch Responsive Pro at http://explorationvacation.net Thanks, Cindy