Version 6 brings a major update of the Firebase extensions and with it a series of changes.
Firebase Auth requires some changes to the manifest additions.
You will need to replace the following:
Remote config extension has been updated and the API brought inline with the Firebase SDK.
The changes include:
fetch()method has been removed and the newer
The ability to change the settings has been updated to utilise the
FirebaseRemoteConfigSettingsclass through the
Retrieving the instance info also includes the current settings,
FirebaseRemoteConfigInfo.settingsretrieved through the call to