appNGizer Maven Plugin creates cryptic messages when Server returns 4xx or 5xx status

[ERROR] Failed to execute goal org.appng.maven:appng-appngizer-maven-plugin:1.15.0:install (default) on project appng-demo: Execution default of goal org.appng.maven:appng-appngizer-maven-plugin:1.15.0:install failed: Could not extract response: no suitable HttpMessageConverter found for response type [class org.appng.appngizer.model.xml.Repository] and content type [text/html;charset=utf-8] -> [Help 1]