elastica - Elasticsearch php error -

I'm trying to insert data, so I'm getting the following error

  {"Error": "failed to parse Mapperparcing Exception [pub]]; nested: Mapperpartsing exception [failed to purge the date field [false], date date [dateOptionalTime] for both and try timestamp number with locale []: Nested: illegal agreement exception [invalid format: \ "wrong \"]; "," status ": 400}