Error Installing Firebase In App Messaging in React Native

I am trying to install the Firebase In-App Messaging component in my app I had installed my existing firebase components before, below is what my package.json looks like for firebase stuff before installing in-app messaging.

    "@react-native-firebase/analytics": "^6.7.1",
    "@react-native-firebase/app": "^6.7.1",
    "@react-native-firebase/crashlytics": "^6.7.1",
    "@react-native-firebase/dynamic-links": "^6.7.1",
    "@react-native-firebase/messaging": "^6.7.1",

So I decided to

npm install --save @react-native-firebase/in-app-messaging@^6.7.1

when i try to pod install i get the following error:

CocoaPods could not find compatible versions for pod "GoogleDataTransportCCTSupport":
  In snapshot (Podfile.lock):
    GoogleDataTransportCCTSupport (= 3.0.0, ~> 3.0)

  In Podfile:
    RNFBInAppMessaging (from `../node_modules/@react-native-firebase/in-app-messaging`) was resolved to 6.7.1, which depends on
      Firebase/InAppMessaging (~> 6.13.0) was resolved to 6.13.0, which depends on
        FirebaseInAppMessaging (~> 0.15.5) was resolved to 0.15.6, which depends on
          GoogleDataTransportCCTSupport (~> 1.0)

    RNFBMessaging (from `../node_modules/@react-native-firebase/messaging`) was resolved to 6.7.1, which depends on
      Firebase/Messaging (~> 6.13.0) was resolved to 6.13.0, which depends on
        FirebaseMessaging (~> 4.1.9) was resolved to 4.1.10, which depends on
          FirebaseCore (~> 6.2) was resolved to 6.4.0, which depends on
            FirebaseCoreDiagnostics (~> 1.0) was resolved to 1.2.4, which depends on
              GoogleDataTransportCCTSupport (~> 3.0)

am i missing something here ?

Duplicate of CocoaPods could not find compatible versions for pod “GoogleDataTransportCCTSupport”

It is happening because you are apparently using firebase 5.x.x which is deprecated. In a nut shell you need to go for the work around recommended in the issue mentioned above.

Or you can upgrade to firebase 6.x.x