Java Android-Firebase手机身份验证不兼容ClassChangeError

我正在尝试集成firebase电话身份验证，但下面附加了

不兼容ClassChangeError

堆栈跟踪。我还附加了根/应用级别的Gradle文件

我用过

来自谷歌的代码片段库

我已按照文档中所述正确执行了每个步骤

我添加了sha1和SH256指纹

我还试图纠正Gradle版本和firebase依赖，但没有成功

错误日志：

我的应用程序级别渐变

plugins {
id 'com.android.application'
id 'com.google.gms.google-services'
    }

android {
compileSdkVersion 30
buildToolsVersion "30.0.3"

defaultConfig {
    applicationId "com.aihighway.aihscreening"
    minSdkVersion 21
    targetSdkVersion 30
    versionCode 1
    versionName "1.0"
    multiDexEnabled true

    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'com.airbnb.android:lottie:3.7.0'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.gordonwong:material-sheet-fab:1.2.1'
implementation 'com.github.AnyChart:AnyChart-Android:1.1.2'
implementation("com.squareup.okhttp3:okhttp:4.9.0")
implementation 'com.google.code.gson:gson:2.8.6'
implementation 'com.github.MackHartley:RoundedProgressBar:2.1.0'
implementation 'org.apache.commons:commons-math3:3.6.1'
implementation 'com.google.firebase:firebase-auth:21.0.0'
implementation 'com.google.firebase:firebase-auth-ktx:21.0.0'
implementation 'com.google.firebase:firebase-core:19.0.0'

testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

我的根级别build.gradle

buildscript {
repositories {
    google()
    mavenCentral()
    maven { url 'https://plugins.gradle.org/m2/' }
}
dependencies {
    classpath 'com.android.tools.build:gradle:4.2.0'
    classpath 'com.google.gms:google-services:4.2.0'

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

allprojects {
repositories {
    google()
    mavenCentral()
    maven { url 'https://plugins.gradle.org/m2/' }
    maven { url "https://jitpack.io" }
    }
}

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

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我设法找到了一个解决办法，我将firebase版本降级到了20.0.0，它对我很有效