Suddenly getting Firebase java.lang.IllegalAccessError at startup of app

Question

suddenly a crash occurs at initial startup of app after installation! But just the first time...after second opening of app it works properly.

I have not changes the firebase code but maybe the dependency...but to the latest version...so normally it should be a stable one!

It seems to have some problem related to firebase:

java.lang.IllegalAccessError: Illegal class access: 'com.google.firebase.messaging.zze' attempting to access 'com.google.firebase.iid.zzat' (declaration of 'com.google.firebase.messaging.zze' appears in base.apk)

My Configurations:

Build.gradle (Project)

buildscript {
    ext.kotlin_version = '1.3.61'
    repositories {
        google()
        jcenter()
        maven { url 'https://plugins.gradle.org/m2/' } //for OneSignal
        maven { url 'https://maven.fabric.io/public' } //for CrashLytics
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        classpath 'com.google.gms:google-services:4.3.3'
        classpath 'io.fabric.tools:gradle:1.31.0'  // Crashlytics plugin

        classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:0.12.5' //for OneSignal

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url 'https://jitpack.io' }
        maven { url 'https://maven.google.com' }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

*****************Build.gradle (Module:app)***************************

apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'

apply plugin: 'com.android.application'

apply plugin: 'io.fabric'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'kotlin-kapt'

android {
    signingConfigs {
        release {
               ....
        }
        debug {
            ....
        }
        staging {
            ....
        }
    }
    compileSdkVersion 29
    defaultConfig {
        applicationId "com.myapp"
        minSdkVersion 26
        targetSdkVersion 29
        versionCode 43
        versionName "1.0.20"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

        manifestPlaceholders = [
                onesignal_app_id               : '....',
                // Project number pulled from dashboard, local value is ignored.
                onesignal_google_project_number: 'REMOTE'
        ]
    }
    buildTypes {
        debug {
            minifyEnabled false
            debuggable true
            buildConfigField "String", "BASE_URL", "\"http://....:8080\"" //http://....:8080
//            buildConfigField "String", "BASE_URL", "\"http://....:8080/....\"" //http://...:8080
        }
        staging {
            minifyEnabled false
            debuggable true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            buildConfigField "String", "BASE_URL", "\"http://....:8080/....\""
            signingConfig signingConfigs.staging
        }
        release {
            minifyEnabled false
            debuggable false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            buildConfigField "String", "BASE_URL", "\"http://....:8080/....\""
            signingConfig signingConfigs.release
        }
    }

    //Google introduced a new App Bundle format to split apk files in smaller sizes when they’re being installed on the client devices.
    //However, this means that we cannot have dynamic language changes in our applications.
    //To prevent that split for language files we need to add extra lines in our build.gradle file inside the app folder like below.
    bundle {
        language {
            enableSplit = false //this setting is needed to enable dynamic switch of language in app.
        }
    }

    dataBinding {
        enabled true
    }

}

//Date for APK File name (info: When deploying on Google Play Store, this date will be included in VersionName as suffix, e.g. 1.0_2019-07-12)
static def getDate() {
    def date = new Date()
    def formattedDate = date.format('YYYY-MM-dd')
    return formattedDate
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'com.google.android.material:material:1.0.0' //1.0.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

    //Android Architecture Components
    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.2.0'

    //OkHttp OAuth2 client
    implementation 'ca.mimic:oauth2library:2.4.2'

    //Anko
    implementation "org.jetbrains.anko:anko:0.10.8"

    //Firebase
    implementation 'com.google.firebase:firebase-core:17.2.2'
    implementation 'com.google.firebase:firebase-auth:19.2.0'

    //Crashlytics
    implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'

    implementation 'androidx.cardview:cardview:1.0.0'

    //Google Maps
    implementation 'com.google.android.gms:play-services-maps:17.0.0'

    //OneSignal
    implementation 'com.onesignal:OneSignal:3.10.9'

    //Picasso
    implementation 'com.squareup.picasso:picasso:2.71828'

    //GIF ImageView
    //implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.15'

    //Jackson
    implementation "com.fasterxml.jackson.module:jackson-module-kotlin:2.9.8"

    //Volley
    implementation 'com.android.volley:volley:1.1.1'

    //SegmentedButton
    implementation 'com.github.ceryle:SegmentedButton:v2.0.2'

    //EasyValidation
    implementation "com.wajahatkarim3.easyvalidation:easyvalidation-core:1.0.1"

    //QuickPermissions-Kotlin
    implementation 'com.github.quickpermissions:quickpermissions-kotlin:0.4.0'

}

apply plugin: 'com.google.gms.google-services'

Answer 1

According official doc:

No longer add the Android library com.google.firebase:firebase-core. This SDK included the Firebase SDK for Google Analytics. Now, to use Analytics (or any of the Firebase products that require or recommend the use of Analytics), you need to explicitly add the Analytics dependency:

com.google.firebase:firebase-analytics:17.2.2

So, No need to add com.google.firebase:firebase-core in your project. Remove it