Google login iOS error "Access Not Configured , activate the API for your project" -

Google login iOS error "Access Not Configured , activate the API for your project" -

i have integrated ios app google plus , maintain getting error past few weeks. did ensure contacts api , google+ api enabled on developer console still receiving error.

error domain=com.google.gtljsonrpcerrordomain code=403 "the operation couldn’t completed. (access not configured. please utilize google developers console activate api project.)" userinfo=0xc8645c0 {error=access not configured. please utilize google developers console activate api project., gtlstructurederror=gtlerrorobject 0xc876bc0: {message:"access not configured. please utilize google developers console activate api project." code:403 data:[1]}, nslocalizedfailurereason=(access not configured. please utilize google developers console activate api project.)}

ios google-plus google-login