Code Lab dependencies assumes you are using Gradle Kotlin

[adfleshner]

When running through the code lab in the on "The Goundwork" page it says to copy and paste.

dependencies {
    val billing_version = "5.0.0"

    implementation("com.android.billingclient:billing:$billing_version")
}

But the Play Billing Codelab start is using groovy for the language in the build.gradle and so you end up with an error for the first step where you click run just to have AS complain about not knowing what val is. If you have experience with this know that the val should be a def in this scenario but, if you are new to the game this may be an unnecessary side quest you have to learn about.