I got a build error with this in it while trying out the new version of firebase
*** Terminating app due to uncaught exception \'com.firebase.appinvite\', reason
My podfile had the following. I just had to uncomment the Firebase/Invites pod. There seems to be a problem with it for now.
pod 'Firebase'
pod 'Firebase/AdMob'
pod 'Firebase/Analytics'
pod 'Firebase/AppIndexing'
pod 'Firebase/Auth'
pod 'Firebase/Crash'
pod 'Firebase/Database'
pod 'Firebase/DynamicLinks'
#pod 'Firebase/Invites' this caused an exception!!
pod 'Firebase/Messaging'
pod 'Firebase/RemoteConfig'
pod 'Firebase/Storage'