Logstash crashed with the following error.
NoMethodError: undefined method `map_cleanup' for nil:NilClass
start at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-codec-multiline-2.0.11/lib/logstash/codecs/identity_map_codec.rb:55
Logstash version :2.3.2
Please help.
Thank in advance.