The following is the error logged by Gradle:
Could not apply requested plugin [id: 'com.hendraanggrian.packr-gradle-plugin', version: '0.1', artifact: 'com.hendraanggrian:packr-gradle-plugin:0.1'] as it does not provide a plugin with id 'com.hendraanggrian.packr-gradle-plugin'. This is caused by an incorrect plugin implementation. Please contact the plugin author(s).
> Plugin with id 'com.hendraanggrian.packr-gradle-plugin' not found.
The artifact is successfully retrieved from Bintray’s JCenter repository, so it seems to be a problem with the actual plugin implementation and/or configuration.