Hi there,
This seems weird, it’s outputting some javascript code in the builder (which causes the error) but not in the actual page. The script is another slider (due to ID #rev_slider_8_2) but I can’t find where it’s added. The slider on your home page is #rev_slider_8_1. Do your host something like internal caching?
So I did got to slider’s setting under Troubleshooting section and turned on the jQuery No Conflict Mode and the slider is now being displayed in the preview.
But the issue still persists in the first section and EG. Would you mind providing your FTP login credentials? I’ll check if there are any internal issues related to this. For the meantime, please re-install your theme and cornerstone. The first section should work since it’s just a video background.
Thanks!