First take all the paper out of the tray, then cancel the job until it's really canceled.
Then there will be an error that there is no paper. You open the drawer, there is a pop up that the drawer is open. You press the X to cancel the print job, it says cancelling print, and then proceeds to print the document.
I usually power it off, after pressing the cancel button. Then, once I power it on, it's usually cleared.