buildscript {
    ext.kotlin_version = '1.3.21'
    ext.anko_version='0.10.8'

    repositories {
        google() // 追加
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:oss-licenses:0.9.2' // 追加
    }
}