What is time series data in Grafana when using RapidMiner webservice as the data source?

Hi all,

I have a table consist of a date column and value/metric column and exposed it as web service. I would like to create a line chart with this table using Grafana on RapidMiner AI Hub.


But it shows no data when I use the web service as time series data. I also tried to change my date from date type to date-time type, and the issue remains.