DataTables help unknown parameter for row

Question

DataTables warning: table id=data_list - Requested unknown parameter for row, column 9. For more information about this error, please see http://datatables.net/tn/4

Answer 1

Either you are not retrieving value for that said field.

OR

You are not returning value for that field from your render function.

as a solution overall, you may add a default content wit the code like this

{ "defaultContent": "-", "targets": "_all" }