error: Uncaught DOMException

Hi

After putting my site on https, i got this error:

Uncaught DOMException: Blocked a frame with origin “https://s7.addthis.com” from accessing a cross-origin frame.

the same for url https://www.facebook.com and https://platform.twitter.com

This only happens on Google Chrome (v. 56.0.2924.87, 64-bit). In Firefox and IE it works fine.

This is the site with the error: https://www.bsvo.nl/