when i run Dataset.getData() i keep finding one of the value as 'undefined'
this is preventing me from being able to Dataset.exportToCSV() because it complains about this undefined value.
is there a ways to clean the Dataset so that undefined value does not appear?
or to know why this is happening?

It might be obvious but have not been able to figure this out, nor in the documentation nor in the forums.
I want to manually manage my datasets and session, but I want to make a Request use a session I have created and to pass on the dataset to the handler of the request.
I know I could pass on using the userData, or I could create it in a different file and simply import it, but these seem like the wrong approaches.