UIView wont appear - ios

Question

I have a function in my viewController that lays out my views using SnapKit. The funcion looks like this
#objc func setupView(){
//will add the scroll view to the subview
view.addSubview(scrollView)
scrollView.addSubview(imageContainer)
scrollView.addSubview(eventInfoVIew)
// scrollView.addSubview(currentEventImage)
scrollView.contentInsetAdjustmentBehavior = .never
scrollView.backgroundColor = .green
eventInfoVIew.backgroundColor = .red
imageContainer.backgroundColor = .blue
scrollView.anchor(top: view.topAnchor, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
imageContainer.anchor(top: scrollView.topAnchor, left: view.leftAnchor, bottom: nil, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: view.frame.width, height: view.frame.height - 200)
eventInfoVIew.anchor(top: imageContainer.bottomAnchor, left: view.leftAnchor, bottom: scrollView.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
scrollView.scrollIndicatorInsets = view.safeAreaInsets
scrollView.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: view.safeAreaInsets.bottom, right: 0)
}
However when I run the app one of the views isn't there and it makes no sense because to the best of my knowledge I laid out the constraints properly. The eventInfoView is the one giving me problems.
Sorry forgot to add image of current screen

Answer 1

Have you try debugging with the view inspector? What happens with your views? A screenshot of the view hierarchy would help a lot.
Without this, my hunch is that you are not using enough constraints and therefore your layout is ambiguous. Don't forget that UIScrollView requires 6 constraints to layout properly instead of 4.
Edit: If you want to check if the scrollView is the issue, try adding this code inside
scrollView.snp.makeConstraints { (make) in
make.edges.equalTo(view)
make.width.height.equalTo(view)
}