I have a table which looks like this (I'm using flask and jinja2):

     dataTable = {{ json_data | tojson }};
     var   view_doc = new Tabulator(
        "#view_doc",
         {
          layout:"fitDataFill",
          locale:"ru",
          data : dataTable,
          columns:{{ json_columnstr | tojson }},
          movableRows:true,
          //movableRowsConnectedTables: "#tablecolumns",
          dataTree:true,
          dataTreeChildField:"columns",
          movableRowsSender: "delete",
          //groupBy:"drilling",
         }

      );

and I'm trying to sort a column with dates:

view_doc.setSort({title:$("input[name=radiosort]:checked").val(), field:$("input[name=radiosort]:checked").attr("id").replace("radio", ""), sorter:"date", dir:active_sort, sorterParams:{format:"dd.MM.YYYY"}})

which evaluates to:

but it gives me this error: Sort Warning - Sort field does not exist and is being ignored. The field and title are correct, so I'm not sure what is causing the error.