I get it on Hangouts from time-to-time.
Clear all Google service/framework/account manager - wipe/clear then disable, remove Google account, reboot, and then re-add as stated previously. Give it two minutes to re-sync. #Profit.
// LG G3 (D855) // Stock // Stock //
S3(White) > M7(Red) > Note 3(Black) > Nexus 5(Black) > M8(Gunmetal) > LG G3 (Titan Grey)