You could run into some results after running a check where a number of URL's in check details will be blank.

Something like this:

You will notice step 78 and 83 have empty Get calls but yet its recording a value, in such cases please make sure to turn off any ad blockers you have have in your browser as the adblocker flagged these URLs as an ad and blocked them. 

Once you refresh your page after these results will show up.