Error parse when version is a variable

[CorrectRoadH]

example:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    apply from: 'versions.gradle'
    ext {
        versions.kotlin = '1.5.10'
    }
    ext.kotlin_version = "1.5.10"
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:${versions.android_gradle_plugin}"
        classpath deps.kotlin.plugin

        classpath 'com.google.gms:google-services:4.3.8'
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.7.0'
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.5"
    }
}

allprojects {
    ext {
        isIdeBuild = project.properties['android.injected.invoked.from.ide'] == 'true'
    }
    repositories {
        google()
        mavenCentral()
    }
}

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

"com.android.tools.build:gradle:${versions.android_gradle_plugin}" convert to named com.android.tools.build:gradle:${versions.android_gradle_plugin} and version is `. instead ofcom.android.tools.build:gradleand${versions.android_gradle_plugin}`