An Internal Error Has Occurred. [ MISSING_CLIENT_IDENTIFIER ]

I'm using phone authentication, it was working fine but after a couple of log in logout attempt its showing this error An internal error has occurred. [ MISSING_CLIENT_IDENTIFIER ]

Solution 1:

At last i solved the issue, it was because i tried and tested to many times using same device with my wifi network as well as mobile network. So somehow they blocked the request for this client id. As soon as i tried it in different device with different network everything was fine. thank you everyone

Solution 2:

Try to update app grandle like:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.devlearn.sohel.tkash"
        minSdkVersion 21
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:design:27.1.1'
    implementation 'com.android.support:animated-vector-drawable:27.1.1'
    implementation 'com.android.support:customtabs:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.github.ybq:Android-SpinKit:1.1.0'
    implementation 'com.google.firebase:firebase-core:16.0.1'
    implementation 'com.google.android.gms:play-services-ads:15.0.1'
    implementation 'com.android.support:recyclerview-v7:27.1.1'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:gridlayout-v7:27.1.1'
    implementation 'com.google.android.gms:play-services-auth:15.0.1'
    implementation 'com.google.firebase:firebase-database:16.0.1'
    implementation 'com.google.firebase:firebase-storage:16.0.1'
    implementation 'com.firebaseui:firebase-ui-database:3.3.1'
    implementation 'com.google.firebase:firebase-auth:16.0.2'
    implementation 'com.budiyev.android:circular-progress-bar:1.2.0'
    implementation 'uk.co.chrisjenx:calligraphy:2.3.0'
    implementation 'com.github.d-max:spots-dialog:0.7@aar'
    implementation 'com.github.HotBitmapGG:RingProgressBar:V1.2.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'

And project grandle like:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.3'
        classpath 'com.google.gms:google-services:4.0.1'

        // 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
}

Solution 3:

To solve this, please change the following lines of code:

classpath 'com.google.gms:google-services:4.0.0'

to

classpath 'com.google.gms:google-services:4.0.1'

and

implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.android.gms:play-services-ads:15.0.0'
implementation 'com.firebaseui:firebase-ui-database:3.3.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'

to

implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.android.gms:play-services-ads:15.0.1'
implementation 'com.firebaseui:firebase-ui-database:4.0.0'
implementation 'com.google.firebase:firebase-auth:16.0.2'