Are you still facing this issue? I just tried the same tutorial steps to recreate the issue but it looks fine. Just refer the below snap and see if this is how the tutorial has got you so far.
If you go into the sprinter portal in the environments tab, you can open the sandbox logs to see if there are any errors thrown. Try deploying to sandbox through the modeler and then publishing through the web modeler. If that still doesn't work you may have to submit a support ticket.