DllNotFoundException: FirebaseCppApp-11_2_0 assembly:<unknown assembly> type:<unknown type> member:(null)

[yuji-10473]

[READ] For Firebase Unity SDK issues, please report to Firebase Unity open-source

Once you've read this section and determined that your issue is appropriate for this repository, please delete this section.

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2021.3.22f1
• Firebase Unity SDK version: 11.2.0
• Source you installed the SDK: auth (.unitypackage or Unity Package Manager)
• Problematic Firebase Component: _____ (Auth, Database, etc.)
• Other Firebase Components in use: _____ (Auth, Database, etc.)
• Additional SDKs you are using: empty project (Facebook, AdMob, etc.)
• Platform you are using the Unity editor on: Linux and Mac (Mac, Windows, or Linux)
• Platform you are targeting: desktop (iOS, Android, and/or desktop)
• Scripting Runtime: Mono (Mono, and/or 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.)

I get this error when I call any firebase functions in a project.

DllNotFoundException: FirebaseCppApp-11_2_0 assembly: type: member:(null)
Firebase.AppUtilPINVOKE+SWIGExceptionHelper..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/android_unity/armeabi-v7a/app/swig/Firebase.App_fixed.cs:4087)
Rethrow as TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception.
Firebase.AppUtilPINVOKE..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/android_unity/armeabi-v7a/app/swig/Firebase.App_fixed.cs:4107)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.AppUtilPINVOKE' threw an exception.
Firebase.AppUtil.SetLogFunction (Firebase.LogUtil+LogMessageDelegate arg0) (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/android_unity/armeabi-v7a/app/swig/Firebase.App_fixed.cs:4817)
Firebase.LogUtil..ctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/app/src/LogUtil.cs:81)
Firebase.LogUtil..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/app/src/LogUtil.cs:37)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.LogUtil' threw an exception.
Firebase.FirebaseApp..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/android_unity/armeabi-v7a/app/swig/Firebase.App_fixed.cs:2014)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.FirebaseApp' threw an exception.
Firebase.Sample.Auth.UIHandler.Start () (at Assets/Firebase/Sample/Auth/UIHandler.cs:80)

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? (eg 100%, 1/5 etc)
100%

What happened? How can we make the problem occur?
This could be a description, log/console output, etc.

If you have a downloadable sample project that reproduces the bug you're reporting, you will
likely receive a faster response on your issue.

Relevant Code:

// TODO(you): code here to reproduce the problem

firebase/quickstart-unity#1130
It seems that the compatibility of the Unity-SDK package cannot be maintained. In a Windows environment, it works fine.

[juzdepeche]

I have the same error on Mac Big Sur

[paulinon]

Hi folks,

Thanks for bringing this to our attention. I have a few questions about your implementation:

• Does the error message appear in both the editor and the app build?
• Does the issue persist when using the quickstart project?
• Could you verify if a FirebaseCppApp-x_x_x.bundle file exists in your Firebase/Plugins/x86_64 folder?
• Could you try if reimporting the SDK made any difference?

[yuji-10473]

Hi folks,

Thanks for bringing this to our attention. I have a few questions about your implementation:

Thank you for reply.

• Does the error message appear in both the editor and the app build?

We have confirmed that the same error occurs in the Unity Editor and Linux executable apps.

• Does the issue persist when using the quickstart project?

quickstart I'm trying to clone this.

• Could you verify if a FirebaseCppApp-x_x_x.bundle file exists in your Firebase/Plugins/x86_64 folder?

It cannot be imported because it is not checked when importing the package.

• Could you try if reimporting the SDK made any difference?

I've tried re-importing several times, but nothing changes.

I think that this problem is caused by trying to apply a compatibility check that is not necessary for the execution environment, but is it correct?

[paulinon]

Hi @yuji-10473,

Are you importing the SDK as a .unitypackage file? If so, could you try clicking All when importing the SDK and see if it makes a difference? This ensures all files in the SDK are included in the import.