Compilation of the godot-admob module with the godot from the trunk (3.1) - D8: Program type already present

After changes in the export templates for Android Godot’s compilation with added godot-admob module can end with an error “D8: Program type already present:”.

For example:

> Task :transformDexArchiveWithExternalLibsDexMergerForDebug FAILED
D8: Program type already present: android.support.v4.app.LoaderManager$LoaderCallbacks

or:

> Task :transformDexArchiveWithExternalLibsDexMergerForDebug FAILED
D8: Program type already present: android.support.v4.widget.AutoScrollHelper$ClampedScroller

To fix this error, in the platform/android/build.gradle.template file, change the dependencies section (around line 25) by deleting the com.android.support:support-core-utils:28.0.0 entry:

From:

dependencies {
  implementation "com.android.support:support-core-utils:28.0.0"
  $GRADLE_DEPENDENCIES$
}

to:

dependencies {
  $GRADLE_DEPENDENCIES$
}

After this change, you must recompile the export for android:

scons -j 4 platform=android target=release
cd platform/android/java
./gradlew build

Compilation of the godot-admob module with the godot from the trunk (3.1) – D8: Program type already present