Gradle 6.5 - conflict causes build error

When building Android on the Linux 2020.11 it says it will use Gradle 4.3.1 but it actually uses 6.5.

Edit: If I use the Linux - 2020.06 stack, it builds.

This causes the error as a previous build using the 4.3.1 Gradle built correctly

Error log:

Unzipping /root/.gradle/wrapper/dists/gradle-6.5-all/2oz4ud9k3tuxjg84bbf55q0tn/gradle-6.5-all.zip to /root/.gradle/wrapper/dists/gradle-6.5-all/2oz4ud9k3tuxjg84bbf55q0tn
Set executable permissions for: /root/.gradle/wrapper/dists/gradle-6.5-all/2oz4ud9k3tuxjg84bbf55q0tn/gradle-6.5/bin/gradle

Welcome to Gradle 6.5!

Here are the highlights of this release:

  • Experimental file-system watching
  • Improved version ordering
  • New samples

For more details see https://docs.gradle.org/6.5/release-notes.html

Starting a Gradle Daemon (subsequent builds will be faster)

Configure project :app
Adding classpath: com.google.gms:google-services:4.2.0

FAILURE: Build failed with an exception.

  • Where:
    Build file ‘/builds/MySilentDiscoClub/SilentDisco/platforms/android/app/build.gradle’ line: 424

  • What went wrong:
    A problem occurred evaluating project ‘:app’.

Failed to apply plugin [id ‘com.google.gms.google-services’]
Cannot add extension with name ‘googleServices’, as there is an extension already registered with that name.

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.