我无法将Firebase管理员SDK添加到项目中

Question

我想使用Uid删除firebase用户，但无法将firebase admin sdk添加到项目中。

我收到此错误： http：\ i.ibb.co/nMY4R1m/image.png

我的依赖项：

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:28.0.0'
    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'

    implementation 'com.google.firebase:firebase-core:16.0.6'
    implementation 'com.google.firebase:firebase-firestore:17.1.5'
    implementation 'com.takisoft.fix:preference-v7:25.3.0.0'
    implementation 'com.google.firebase:firebase-auth:16.2.1'
    implementation 'com.google.android.gms:play-services-auth:11.8.0'
    implementation 'com.google.firebase:firebase-admin:6.0.0'
}

我不知道我的代码是什么问题