When publish Instant App:Invalid target sandbox version

I try to publish the Android Instant App via Google Play. I might following problem

I try to solve this problem by adding the attribute android:targetSandboxVersion = "2", still not work.

In general, the problem has these settings(build.gradle)

buildscript {

    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0-beta5'

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

allprojects {
    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
        google()
    }
}


ext {
    minSdkVersion = 26
    targetSdkVersion = 26
    compileSdkVersion = 26
    buildToolsVersion = '26.0.1'
    androidSupport = '26.0.0'
    versionCode = 5
    versionName = "1.1"
}

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

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As commented, I revise the base feature by adding the statement android:targetSandboxVersion = "2", then I cannot go through the compiling as errors shown, even if I clean, rebuild the project.