Android——gradle找不到的坑

ext {
    var = ‘3.6.3‘
}// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath ‘com.android.tools.build:gradle:3.6.3‘

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}
    allprojects {
        repositories {
            jcenter()
            google()
            //maven { url "https://maven.google.com"}
        }
    }
    task clean(type: Delete) {
        delete rootProject.buildDir
}

//android {
//    compileSdkVersion 28
//    buildToolsVersion ‘28.0.3‘
//}

dependencies {
}