编译问题追踪 ：Configuration with name ‘kapt‘ not found

.UnknownConfigurationException: Configuration with name 'kapt' not found

导入realm的时候遇到此问题
先看 guide:

buildscript {
    repositories {
        mavenCentral()
        google()
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
        jcenter()
    }
    dependencies {
        classpath "io.realm:realm-gradle-plugin:-SNAPSHOT"
    }
}

allprojects {
    repositories {
        mavenCentral()
        google()
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
        jcenter()
    }
}

apply plugin: 'realm-android'

没有提到‘kapt’

导入kapt,如下：

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'
apply plugin: 'realm-android'