I have a query which is able to fetch me the results. I want to extract the fields from raw data. So I click on 'Extract New Fields'. But step 'Select Sample Event' just goes on and on, as shown in image below. Sample data never shows up, hence I am not able to select the target field.
I even tried other route...Event Actions -> Extract field. But nothing happens and I just see text 'Loading' on the page, as below:
