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I'm trying to use Firebase In-App Messaging and just added some lines to my Podfile.

But when I run pod install, I got an error message below:

[!] CocoaPods could not find compatible versions for pod "Firebase/InAppMessagingDisplay":
 In Podfile:
 Firebase/InAppMessagingDisplay

Specs satisfying the `Firebase/InAppMessagingDisplay` dependency were found, but they required a higher minimum deployment target.

I also tried pod install --repo-update, but got the same error.

How can I install the pod?

My cocoapod is 1.5.3, and Xcode is 10.1.

Here's my Podfile:

# Uncomment the next line to define a global platform for your project
platform :ios, '12.0'

target 'iOSTestApp' do
 # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
 use_frameworks!

 # Pods for iOSTestApp
 pod 'Firebase/Core'
 pod 'Firebase/Messaging' 
 pod 'Firebase/DynamicLinks'
 pod 'Firebase'
 pod 'Firebase/InAppMessagingDisplay'

 target 'iOSTestAppTests' do
 inherit! :search_paths
 # Pods for testing
 end

end

And the result of pod outdated:

- Firebase 4.4.0 -> (unused) (latest version 5.12.0)
- FirebaseAnalytics 4.0.4 -> 5.3.0 (latest version 5.3.0)
- FirebaseCore 4.0.9 -> 5.1.7 (latest version 5.1.7)
- FirebaseDynamicLinks 2.1.0 -> 3.1.1 (latest version 3.1.1)
- FirebaseInstanceID 2.0.5 -> 3.3.0 (latest version 3.3.0)
- FirebaseMessaging 2.0.5 -> 3.2.1 (latest version 3.2.1)
- GoogleToolboxForMac 2.1.3 -> (unused) (latest version 2.1.4)
- nanopb 0.3.8 -> 0.3.901 (latest version 0.3.901)
- Protobuf 3.4.0 -> 3.6.1 (latest version 3.6.1)

InAppMessaging requires Firebase 5.x. Do a pod update so that your existing pods will update past their currently install versions.

This is what I did.

pod 'Firebase'
pod 'Firebase/Core'
pod 'FirebaseMessaging' #, '~> 2.0.5'
pod 'Firebase/DynamicLinks'
pod 'Firebase/InAppMessagingDisplay'

Save podfile.

1. Quit xCode


2. Delete Pods folder and Podfile.lock


3. run pod install --verbose


4. if issue is resolved, thats good.

Else do following steps, it will update all your Pods

5. pod update

hope it helps.