Error messages - Index Failures

Hi

I am getting this Error message from 2-3 days. Can you please help me how to resolve this.

{“type”:“mapper_parsing_exception”,“reason”:“failed to parse [response_status]”,“caused_by”:{“type”:“number_format_exception”,“reason”:“For input string: “success””}}

Graylog version - 2.4.6
Elasticsearch version - 5.6

Thanks in advance

you could write your own elasticsearch index template

http://docs.graylog.org/en/2.4/pages/configuration/elasticsearch.html#custom-index-mappings

that would solve the issue that the content type of a field in elasticsearch is set on the first data that is ingested to the content type that first values has.