Kafka Input Tutorial for Logstash 5.1.1

Which console are you referring to? Your logstash console?

Could not find log4j2 configuration at path /Users/A/test/logstash-5.1.1/config/log4j2.properties. Using default config which logs to console

You can try to start logstash as:
..\logstash-5.1.1\bin\logstash -f test.conf --path.settings=dir_name_where_logstash.yml_is_located --config.debug --log.level debug after which you can see the logs in logstash logs directory.