任务＆＃39; prepareReleaseUnitTestDependencies＆＃39;在项目＆＃39;：app中找不到

Question

当我尝试运行我的应用时，我正在努力解决错误。发生的错误是Task＆＃39; prepareReleaseUnitTestDependencies＆＃39;在项目＆＃39;：app。

中找不到

我已经在设置下将准备发布单元依赖项添加到命令行编译器但是它没有区别？

有什么建议吗？

以下代码来自app gradle。

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.example.sjmplanningfinal"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner  "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}


sourceSets {
    unitTest {
        java.srcDir file('src/test/java')
        resources.srcDir file('src/test/res')
     }
}

configurations {
    unitTestCompile.extendsFrom runtime
    unitTestRuntime.extendsFrom unitTestCompile

    dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
        androidTestCompile('com.android.support.test.espresso:espresso-    core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.android.support:support-v4:25.3.1'
    testCompile 'junit:junit:4.12'
}