code: @Bean
  	@ConditionalOnProperty(value = "sample.zipkin.enabled", havingValue = "false")
  	public Reporter<Span> spanReporter() {
  		return new Reporter<Span>() {
  			@Override
  			public void report(Span span) {
  				logger.info(span);
  			}
  		};
  	}
docs: Use this for debugging (or if there is no Zipkin server running on port 9411)