Figure 17.6 shows 3 constraints and the book says add 5 constraints, I stopped and can’t figure out what constraints I need to do? Please help! 
"Open the Add New Constraints menu and configure the constraints as shown in Figure 17.6. Click Add 5 Constraints and the frames for both the visual effect view and the stack view will update. "
Figure 17.6 shows constraints on all 4 edges plus height; that makes 5 total. The leading & trailing edge constraints have a 0 offset but they’re still enabled.
what should be the stack height?
Did you try the default presented?
If you haven’t already done so, check out the Auto Layout Cookbook. Although no longer being updated, it is still worth reading.
The height should be 50. I took a look to solutions and the stack view should have 0 leading, 0 trailing, 8 top, 0 bottom and height 50. Apparently the image (figure 17.6) is incorrect.
Thanks, @janzoner. Your suggestion solved my problem with the constraints for the stack view.
Weird… my version of the book shows the following graphic for Figure 17.6, which I believe is correct:
I’m reading on learning.oreilly.com and the book’s publication info says:
Seventh edition, first printing, March 2020
Release E.7.1.1
