":error_message=>"undefined method `sanitized'"

Elastic Stack Logstash
4

Hi,

Logstash version 5.6.2 and the config is below:

input {
  jdbc {
    jdbc_driver_library => "C:\Program Files\Java\sqljdbc_6.2\enu\mssql-jdbc-6.2.1.jre8.jar"
    jdbc_driver_class => "com.microsoft.sqlserver.jdbc.SQLServerDriver"
    jdbc_connection_string => "jdbc:sqlserver://xxxxxxxx;databaseName=xxxxxxxx"
	jdbc_validate_connection => true
    jdbc_user => "xxxxxx"
    jdbc_password => "xxxxxx"
    statement => "SELECT * FROM [Database].[dbo].[Table] with (NOLOCK) where [RecordedTime] > '2017-10-13'"
	type => "CustomType"
	jdbc_fetch_size => 15
  }
}
output {
  elasticsearch 
  {
    hosts => ["10.34.29.37:9200","10.34.29.12:9200","10.34.29.50:9200"] 
    index => "test-%{+YYYY.MM.dd}" 
    document_type => "CustomType" 
	document_id => "%{id}"
	http_compression => true
	user => xxxxxxx
    password => xxxxxxx
  }
  stdout { codec => rubydebug }
}

I think it is Elastic Search rejecting the bulk request due to its size but Logstash is retrying the request hence then getting stuck in an endless loop. I came to this conclusion as I upgraded to 5.6.3 and got a different error, more info is here