Local module descriptor class for com.google.firebase.auth not found

Question

I tried firebase authentication to create a user. When creating a user, I get the following error stack.

> 07-27 07:37:26.385 30248-30261/com.belleza.mewChat W/DynamiteModule:
> Local module descriptor class for com.google.firebase.auth not found.
> 07-27 07:37:26.385 30248-30261/com.belleza.mewChat W/DynamiteModule:
> Local module descriptor class for com.google.firebase.auth not found.
> 07-27 07:37:27.140 30248-30248/com.belleza.mewChat D/Login:
> createUser:onComplete:false 07-27 07:37:27.311
> 30248-30267/com.belleza.mewChat V/RenderScript: 0xb8b54170 Launching
> thread(s), CPUs 8 07-27 07:37:36.501 30248-30261/com.belleza.mewChat
> W/DynamiteModule: Local module descriptor class for
> com.google.firebase.auth not found.

I added a SHA key for my project in the firebase console. The gradle has also been updated to the latest versions.

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.belleza.mewChat"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'com.android.support:design:23.4.0'
    compile 'com.android.support:support-v4:23.4.0'
    compile 'com.hbb20:ccp:1.5.1'

    //firebase database,ui
    compile 'com.firebaseui:firebase-ui-database:0.4.1'
    compile 'com.google.firebase:firebase-database:9.2.0'

    //firebase auth
    compile 'com.google.android.gms:play-services-auth:9.2.0'
    compile 'com.google.firebase:firebase-auth:9.2.0'
}
apply plugin: 'com.google.gms.google-services'

Answer 1

this error may also increase if the provided password is less than 6 characters

Answer 2

When i install

...
release {
    minifyEnabled true
    ...
}
...

in my build.gradle this solved my problem.

Answer 3

In my case, this error was caused by an outdated version of Google Play services on my emulator device. The problem was resolved by updating Google Play services from the Google Play store.