Access Denied Exception while running EMR step 2

While running ETL runner, it launches emr job, which are failing due to s3 exception as below. I am using the latest version with the following command

$ /home/ec2-user/snowplow/bin/snowplow-emr-etl-runner --debug --config /home/ec2-user/snowplow/enrich/runner.yaml --resolver /home/ec2-user/snowplow/enrich/resolver.json --enrichments /home/ec2-user/snowplow/enrich/enrichments/ --targets /home/ec2-user/snowplow/enrich/targets

Exception in thread "main" cascading.flow.FlowException: unhandled exception
	at cascading.flow.BaseFlow.complete(BaseFlow.java:918)
	at com.twitter.scalding.Job.run(Job.scala:265)
	at com.twitter.scalding.Tool.start$1(Tool.scala:104)
	at com.twitter.scalding.Tool.run(Tool.scala:120)
	at com.twitter.scalding.Tool.run(Tool.scala:68)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
	at com.snowplowanalytics.snowplow.enrich.hadoop.JobRunner$.main(JobRunner.scala:33)
	at com.snowplowanalytics.snowplow.enrich.hadoop.JobRunner.main(JobRunner.scala)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: F3F754FEA2FFAC61), S3 Extended Request ID: /CNAyti95YE/t+jL9usX9u4dV08udvcj00XZkal3tlf1sJdduQRCiOdI6TDwJm18YX6CEFu0+cM=
	at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1369)
	at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:913)
	at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:631)
	at com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:400)
	at com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:362)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:311)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3673)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3626)
	at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:693)
	at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.list(Jets3tNativeFileSystemStore.java:271)
	at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.list(Jets3tNativeFileSystemStore.java:254)
	at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.list(Jets3tNativeFileSystemStore.java:247)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
	at com.sun.proxy.$Proxy25.list(Unknown Source)
	at com.amazon.ws.emr.hadoop.fs.s3n.S3NativeFileSystem.getFileStatus(S3NativeFileSystem.java:758)
	at com.amazon.ws.emr.hadoop.fs.EmrFileSystem.getFileStatus(EmrFileSystem.java:515)
	at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.getFileStatus(ClientDistributedCacheManager.java:288)
	at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.getFileStatus(ClientDistributedCacheManager.java:224)
	at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.determineTimestamps(ClientDistributedCacheManager.java:93)
	at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.determineTimestampsAndCacheVisibilities(ClientDistributedCacheManager.java:57)
	at org.apache.hadoop.mapreduce.JobResourceUploader.uploadFiles(JobResourceUploader.java:179)
	at org.apache.hadoop.mapreduce.JobSubmitter.copyAndConfigureFiles(JobSubmitter.java:95)
	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:190)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1287)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:575)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:570)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:570)
	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:561)
	at cascading.flow.hadoop.planner.HadoopFlowStepJob.internalNonBlockingStart(HadoopFlowStepJob.java:107)
	at cascading.flow.planner.FlowStepJob.blockOnJob(FlowStepJob.java:196)
	at cascading.flow.planner.FlowStepJob.start(FlowStepJob.java:149)
	at cascading.flow.planner.FlowStepJob.call(FlowStepJob.java:124)
	at cascading.flow.planner.FlowStepJob.call(FlowStepJob.java:43)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

Here is my runner config

aws:
  # Credentials can be hardcoded or set in environment variables
  access_key_id: xxxx
  secret_access_key: xxxxx
  s3:
    region: us-west-2
    buckets:
      assets: s3://snowplow-hosted-assets # DO NOT CHANGE unless you are hosting the jarfiles etc yourself in your own bucket
      jsonpath_assets: # If you have defined your own JSON Schemas, add the s3:// path to your own JSON Path files in your own bucket here
      log: s3://namespace-analytics/logs
      raw:
        in:
          - s3://elasticbeanstalk-us-west-2-377172143455/resources/environments/logs/publish/e-vcgkcxe3cz
        processing: s3n://namespace-analytics/raw/processing
        archive: s3://namespace-analytics-data/raw/archive    # e.g. s3://my-archive-bucket/raw
      enriched:
        good: s3://namespace-analytics-data/enriched/good         # e.g. s3://my-out-bucket/enriched/good
        bad: s3://namespace-analytics-data/enriched/bad           # e.g. s3://my-out-bucket/enriched/bad
        errors: s3://namespace-analytics-data/enriched/errors     # Leave blank unless :continue_on_unexpected_error: set to true below
        archive: s3://namespace-analytics-data/enriched/archive   # Where to archive enriched events to, e.g. s3://my-archive-bucket/enriched
      shredded:
        good: s3://namespace-analytics-data/shredded/good         # e.g. s3://my-out-bucket/shredded/good
        bad: s3://namespace-analytics-data/shredded/bad           # e.g. s3://my-out-bucket/shredded/bad
        errors: s3://namespace-analytics-data/shredded/errors     # Leave blank unless :continue_on_unexpected_error: set to true below
        archive: s3://namespace-analytics-data/shredded/archive   # Where to archive shredded events to, e.g. s3://my-archive-bucket/shredded
  emr:
    ami_version: 4.5.0
    region: us-west-2        # Always set this
    jobflow_role: EMR_EC2_DefaultRole # Created using $ aws emr create-default-roles
    service_role: EMR_DefaultRole     # Created using $ aws emr create-default-roles
    placement: # Set this if not running in VPC. Leave blank otherwise
    ec2_subnet_id: # Set this if running in VPC. Leave blank otherwise
    ec2_key_name: namespace-production
    bootstrap: []           # Set this to specify custom boostrap actions. Leave empty otherwise
    software:
      hbase:                # Optional. To launch on cluster, provide version, "0.92.0", keep quotes. Leave empty otherwise.
      lingual:              # Optional. To launch on cluster, provide version, "1.1", keep quotes. Leave empty otherwise.
    # Adjust your Hadoop cluster below
    jobflow:
      master_instance_type: m1.small
      core_instance_count: 1
      core_instance_type: m1.small
      core_instance_ebs:    # Optional. Attach an EBS volume to each core instance.
        volume_size: 20    # Gigabytes
        volume_type: "gp2"
        volume_iops: 400    # Optional. Will only be used if volume_type is "io1"
        ebs_optimized: false # Optional. Will default to true
      task_instance_count: 0 # Increase to use spot instances
      task_instance_type: m1.small
      task_instance_bid: 0.015 # In USD. Adjust bid, or leave blank for non-spot-priced (i.e. on-demand) task instances
    bootstrap_failure_tries: 3 # Number of times to attempt the job in the event of bootstrap failures
    additional_info:        # Optional JSON string for selecting additional features
collectors:
  format: clj-tomcat # For example: 'clj-tomcat' for the Clojure Collector, 'thrift' for Thrift records, 'tsv/com.amazon.aws.cloudfront/wd_access_log' for Cloudfront access logs or 'ndjson/urbanairship.connect/v1' for UrbanAirship Connect events
enrich:
  job_name: Snowplow ETL # Give your job a name
  versions:
    hadoop_enrich: 1.8.0 # Version of the Hadoop Enrichment process
    hadoop_shred: 0.10.0 # Version of the Hadoop Shredding process
    hadoop_elasticsearch: 0.1.0 # Version of the Hadoop to Elasticsearch copying process
  continue_on_unexpected_error: false # Set to 'true' (and set :out_errors: above) if you don't want any exceptions thrown from ETL
  output_compression: NONE # Compression only supported with Redshift, set to NONE if you have Postgres targets. Allowed formats: NONE, GZIP
storage:
  download:
    folder: /home/ec2-user/postgres # Postgres-only config option. Where to store the downloaded files. Leave blank for Redshift
monitoring:
  tags: {} # Name-value pairs describing this job
  logging:
    level: DEBUG # You can optionally switch to INFO for production
  snowplow:
    method: get
    app_id: snowplow-backend # e.g. snowplow
    collector: collector.namespace.co # e.g. d3rkrsqld9gmqf.cloudfront.net

Whats the posible fix ?