Android studio 3.6.1 报错 解决Android studio 3.6.1 出现Cause: unable to find valid certification path to r

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
  repositories {
    maven { url 'http://maven.aliyun.com/nexus/content/repositories/google' }
    maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter'}
  }
  dependencies {
    classpath 'com.android.tools.build:gradle:3.6.1'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
  }
}
allprojects {
  repositories {
//    google()
//    jcenter()
    maven { url 'http://maven.aliyun.com/nexus/content/repositories/google' }
    maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter'}
  }
}