vn-sales/build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
//ext.kotlin_version = '1.2.51'
buildscript {
    ext.kotlin_version = '1.3.0'

    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.2'
        //classpath 'com.android.tools.build:gradle:3.1.3'
        //classpath 'com.android.tools.build:gradle:3.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.0.1'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }

    }


}