MissingPropertyException in gradle android-CodePudding

I am creating some constants in my build gradle file and I am getting the following error while building

A problem occurred evaluating root project 'App'.

Exception evaluating property 'gradle' for java.util.ArrayList, Reason: groovy.lang.MissingPropertyException: No such property: gradle for class: java.lang.String

This is my top level gradle where I am making th change

buildscript {
ext{
    compileSdkVersion = 31
    targetSdkVersion = 31
    minSdkVersion = 21
    versions=[
            kotlin='1.6.10',
            gradle='4.2.1'
    ]

}

repositories {
    google()
    mavenCentral()

}
dependencies {
    classpath "com.android.tools.build:gradle:${versions.gradle}"
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}"
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

CodePudding user response：

It was syntax Issue caused due to the use of =

versions = [
            kotlin : '1.6.10',
            gradlePlugin : '4.2.1'
    ]