Uncaught TypeError

My entire site is currently not loading properly. It loads for a split second then goes blank. WP Dashboard is accessible.

Console is telling me there is an Uncaught TypeError: Failed to execute ‘removeChild’ on ‘Node’ : parameter 1 is not of type ‘Node’ on one of the .js files.

I am unsure if this problem is causing the white screen.

Also after the initial pageload, an iframe appears in the body pointing to this url (https://6852975.fls.doubleclick.net/activityi;src=6852975;type=invmedia;cat=dhyxkz5h;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=;ord=5548645380888.673?) There seems to be no information about such url.

The page I need help with: [log in to see the link]