Tutorial Jukebox roadblock

When in Tutorial, Jukebox - it says "click on add button to continue" but there is NO add button.  Cannot proceed.

If you are looking to learn Roll20 I would recommend  against  taking the tutorial. It  is very old and out of date. At some point it  will  break. My suggestion is to check out the  Learning Roll20  Course on Youtube, or my own video,  Starting from Scratch .  Additionally, starting your own test game to play with different features and controls is a fantastic way of getting used to the software and layout.