I am developing react-native app.
I followed the firebase instruction adding my iOS app to my firebase project.
In my Podfile, I have:
pod 'Firebase/Crashlytics'
pod 'Firebase/Analytics'
when I run pod install I keep getting the error saying "CocoaPods could not find compatible versions for pod "Firebase/Crashlytics".

Xcode version 11.7, target iOS10.1
Why I get that error and how to get rid of it?
(I tried run pod update 'Firebase', I get:
[!] The
FirebasePod is not installed and cannot be update)