[@eureka345 Participant 9 years, 2 months ago]

I have the same behaviour on my setup. WP Multisite, BP multiblog enabled. I deactivated everything and reverted to 2015 theme.

[@eureka345 Participant 9 years, 2 months ago]

I am getting this error with zero plugins activated – only BuddyPress. Even on Twenty Fifteen theme I am still receiving this error (well, notice).