Hi,
I'm getting this message on most pages in MN, and it is runnign very slowly. Adverts at the bottom seem to be loading incredibly slowly also - this may be li ked?
Chrome oAndroid - not seen this error before and have not updated Chrome - apologies for typo also makes my keyboard laggy. I sometimes also get a "oh snap!something has gone wrong with this page"
Have you possibly changed the way you embed your adverts?