My gradle setups. Replace _ with / like app_build.gradle should convert to app/build.gradle

app_build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'



android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "$AppId"
        minSdkVersion 23
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation project(':featuremodule')
//    implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:27.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}

build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.2.31'
    ext.plugin_version = "3.2.0-alpha08"
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:$plugin_version"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

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

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

commondata_build.gradle

apply plugin: 'kotlin-platform-common'


dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-common:$kotlin_version"
    testImplementation "org.jetbrains.kotlin:kotlin-test-common:$kotlin_version"
    testImplementation "org.jetbrains.kotlin:kotlin-test-annotations-common:$kotlin_version"
}

featuremodule_build.gradle

apply plugin: 'com.android.feature'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-platform-android'
android {
    compileSdkVersion 27

    baseFeature true

    defaultConfig {
        minSdkVersion 23
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

}

dependencies {
    expectedBy project(':commondata')
    application project(':app')
    api 'com.android.support:appcompat-v7:27.1.0'
    api 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    api "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
    testImplementation "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
}

instantapp_build.gradle

apply plugin: 'com.android.instantapp'

dependencies {
    implementation project(':featuremodule')
}

settings.gradle

include ':app', ':commondata', ':instantapp', ':featuremodule'