ScrollView doesn't work properly in Xcode

Question

I would display a view in my iOS app, but when I try to use ScrollView, even if I put stack views, it doesn't work.

Here is a screenshot of my storyboard:

I do tests with a long description I put in my code, but the scroll view doesn't work properly. Here are the constraints of my View Controller:

Where the problem could come from?

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EDIT:

After deleting the View.centerY = centerY , I get this error:

Scroll View: Need constraints for: Y position or height

Here is my new constraints:

Answer 1

Constraint View.centerY = centerY between the content view and the scrollView will prevent scrolling. Drop that constraint.