问错误:Lambda来自jar文件，需要它们在类路径上的接口来编译RxJava2

EN

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
    applicationId "com.communicator"
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    vectorDrawables.useSupportLibrary = true
    jackOptions {
        enabled true
    }

    }
    buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
    }
    configurations.all {
    resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    }
    compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
    }
}

ext {
    rxlifecycleVersion = '2.0.1'
    icepickVersion = '3.2.0'
}

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 'io.reactivex.rxjava2:rxjava:2.0.7'
    compile "com.trello.rxlifecycle2:rxlifecycle:$rxlifecycleVersion"
    compile "com.trello.rxlifecycle2:rxlifecycle-android:$rxlifecycleVersion"
    compile "com.trello.rxlifecycle2:rxlifecycle-components:$rxlifecycleVersion"

    compile "frankiesardo:icepick:$icepickVersion"
    provided "frankiesardo:icepick-processor:$icepickVersion"

    compile project(path: ':transport')
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.1'
    compile 'com.android.support:support-v4:25.3.1'
    compile 'com.android.support:design:25.3.1'
    testCompile 'junit:junit:4.12'
}