Connecting from jaeger tracing to elasticsearch

Greetings. im trying to connect to elasticsearch from yaeger tracing app, it looks like it is connected with the correct url and creds but when i look at the yaeger ui im seeing this error. Ideas please ? thanks,

HTTP Error: search services failed: elastic: Error 400 (Bad Request): all shards failed [type=search_phase_execution_exception]: RootCause[Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [serviceName] in order to load field data by uninverting the inverted index. Note that this can use significant memory. [type=illegal_argument_exception]]