[Bug] Duplicate class com.google.firebase.iid.FirebaseInstanceIdReceiver found

[revolt3r]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.3.34
• Firebase Unity SDK version: 8.10.1
• Source you installed the SDK: .tgz with Unity Package Manager
• Problematic Firebase Component: Messaging?
• Other Firebase Components in use: Auth, Database, Firestore, Functions, Messaging, RemoteConfig, Analytics
• Additional SDKs you are using: I think that's not relevant for this issue
• Platform you are using the Unity editor on: Windows
• Platform you are targeting: iOS, Android
• Scripting Runtime: IL2CPP

[REQUIRED] Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

Steps to reproduce:

Have you been able to reproduce this issue with just the Firebase Unity quickstarts (this GitHub project)?
What's the issue repro rate? 100%

What happened? How can we make the problem occur?
Building fails with the following error:

Execution failed for task ':launcher:checkDebugDuplicateClasses'.

1 exception was raised by workers:
java.lang.RuntimeException: Duplicate class com.google.firebase.iid.FirebaseInstanceIdReceiver found in modules jetified-firebase-iid-20.0.1-runtime.jar (com.google.firebase:firebase-iid:20.0.1) and jetified-firebase-messaging-23.0.3-runtime.jar (com.google.firebase:firebase-messaging:23.0.3)

[paulinon]

Hi @revolt3r,

Thanks for reporting this issue. Could you try these steps and see if they help resolve the issue:

1. Enable Custom Gradle Properties Template under Player Settings > Settings for Android > Publishing Settings
2. Make sure these lines of code are present in your gradleTemplate.properties file:

android.useAndroidX = true
android.enableJetifier = true

3. Select Force Resolve under Assets > External Dependency Manager > Android Resolver

I'm looking forward to your results.

[revolt3r]

Hi @paulinon,

These settings were all already in place. "Force Resolve" was successful, but I'm still getting the same "duplicate class" error during the build.

I forgot to mention that I'm upgrading from 8.6.2 to 8.10.1 -> I had no issues before the update.

[mrtrizer]

Same problem here.
Firebase version: 8.10.1 upgrading from 8.7
Unity 2019.4.35f1
Gradle template already contains useAndroidX and enableJetifier set true

* What went wrong:
Execution failed for task ':launcher:checkReleaseDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: Duplicate class com.google.firebase.iid.FirebaseInstanceIdReceiver found in modules jetified-firebase-iid-20.0.1-runtime.jar (com.google.firebase:firebase-iid:20.0.1) and jetified-firebase-messaging-23.0.3-runtime.jar (com.google.firebase:firebase-messaging:23.0.3)

[paulinon]

Thanks for the additional details, folks. I haven't encountered the error message yet. Could you provide the complete steps you've taken in replicating this issue?

[revolt3r]

There are no specific steps, it's just failing during a normal build.
With Firebase 8.6.2 the build finished with no issues.
After updating all Firebase libs to 8.10.1, the build started failing with this error.

It seems like the Messaging module is conflicting with the core Firebase (at least that's what it looks like from the error)
@paulinon did you try to make a build with this mix of modules and it succeeds with no issues?