ios pods google 특이한 에러

occurred error after pod update

Pods/GTMOAuth2/GTMOAuth2ViewControllerTouch.m

use of undeclared identifier 'GTMOAuth2ErrorTokenUnavailable'; did you mean 'kGTMOAuth2ErrorTokenUnavailable'?

check defined enum.

'kGTMOAuth2ErrorTokenUnavailable' has deprecated. (GTMOAuth2Authentication.h : line 110 )

What the....!!!!

check a podfile 

pod 'Google'

pod 'Google/Signin'

pod update : installing libs(dependency) :

Google

GoogleSignIn

GoogleAppUtitlities

GoogleSymbolUtilties

GoogleInterchangeUtilities

GTMOAuth2

GTMSessionFetcher

FirebaseCore

FirebaseInstanceID

FirebaseAnalytics

GoogleToolboxForMac

edit podfile as below

pod 'Firebase/Core'

pod 'Firebase/Auth'

pod 'Google/SignIn'

pod update : add more two libs

Firebase

FirebaseAuth

build~

error has gone~ far~ away~~~~