Not able to connect to AWS ES

[eservecloud-ssd]

I have setup logstash dynamodb input plugin in a EC2 instance and the below if my configuration file to start the plugin:

input {
dynamodb{
endpoint => "dynamodb.us-east-1.amazonaws.com"
streams_endpoint => "streams.dynamodb.us-east-1.amazonaws.com"
view_type => "new_and_old_images"
aws_access_key_id => "xxxxxxxxxxxxxxxx"
aws_secret_access_key => "xxxxxxxxxxx"
table_name => "FoodItem"
}
}
output {
elasticsearch {
host => ["search-testfooditemdomain-yw2nsxkyfmub2x7ijfyra5v6xu.us-east-1.es.amazonaws.com"]
region => "us-east-1"
aws_access_key_id => "xxxxxxxxxxxxxxxx"
aws_secret_access_key => "xxxxxxxxxxx"
}
stdout { }
}

I am getting the following error:
Pipeline aborted due to error {:exception=>"LogStash::ConfigurationError", :backtrace=>["/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/config/mixin.rb:88:in config_init'", "org/jruby/RubyHash.java:1342:in each'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/config/mixin.rb:72:in config_init'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/outputs/base.rb:79:in initialize'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/output_delegator.rb:74:in register'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/pipeline.rb:181:in start_workers'", "org/jruby/RubyArray.java:1613:in each'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/pipeline.rb:181:in start_workers'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/pipeline.rb:136:in run'", "/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.4.0-java/lib/logstash/agent.rb:491:in start_pipeline'"], :level=>:error}

Please help since I am new to this plugin.