Issue installing react-native-firebase on iOS

I'm attempting to install react-native-firebase on an iOS project. I've followed all instructions but keep having issue

I get the following error:

Image may be NSFW.
Clik here to view.

However, I'm able to import <Firebase.h> from the AppDelegate.m file

I've tried different way to troubleshoot:

• pod update
• Uncommented platform :ios, '9.0'
• Cleaned project
• Reinstalled everything
• Added Header Search Paths in Build Settings with: $(SRCROOT)/../node_modules/react-native-firebase/ios/RNFirebase in recursive

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

... I'm not sure what is left to try!

This is the dependencies downloaded by Pod:

Using Firebase (5.1.0)
Using FirebaseAnalytics (5.0.1)
Using FirebaseCore (5.0.2)
Using FirebaseInstanceID (3.0.0)
Using GoogleToolboxForMac (2.1.4)

Any idea what else could cause this problem?

Thanks