iOS使用代码调整约束做动画效果时出现Unable to simultaneously satisfy constraints.

Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don‘t want. Try this: (1) look at each constraint and try to figure out which you don‘t expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you‘re seeing NSAutoresizingMaskLayoutConstraints that you don‘t understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x170097340 V:|-(0)-[UICollectionView:0x127981200]   (Names: ‘|‘:UIView:0x1275336e0 )>",
    "<NSLayoutConstraint:0x170095680 V:[UICollectionView:0x127981200]-(38)-|   (Names: ‘|‘:UIView:0x1275336e0 )>",
    "<NSLayoutConstraint:0x17009d830 V:[_UILayoutGuide:0x12753f2d0]-(0)-[UIView:0x1275336e0]>",
    "<NSLayoutConstraint:0x1700973e0 V:[UIView:0x1275336e0]-(416)-[_UILayoutGuide:0x12753f090]>",
    "<_UILayoutSupportConstraint:0x1742bda60 V:[_UILayoutGuide:0x12753f2d0(0)]>",
    "<_UILayoutSupportConstraint:0x1742b9560 V:|-(0)-[_UILayoutGuide:0x12753f2d0]   (Names: ‘|‘:UIView:0x1275ce900 )>",
    "<_UILayoutSupportConstraint:0x1742bdbe0 V:[_UILayoutGuide:0x12753f090(0)]>",
    "<_UILayoutSupportConstraint:0x1742bd9a0 _UILayoutGuide:0x12753f090.bottom == UIView:0x1275ce900.bottom>",
    "<NSLayoutConstraint:0x174284d80 ‘UIView-Encapsulated-Layout-Height‘ V:[UIView:0x1275ce900(416)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x170095680 V:[UICollectionView:0x127981200]-(38)-|   (Names: ‘|‘:UIView:0x1275336e0 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

- (void)updateViewConstraints {
    [super updateViewConstraints];
    //隐藏筛选框
    _siftTopCons.constant = -ScreenHeight+64;//顶部先上去
    _siftBottomCons.constant = ScreenHeight-64;//底部再上来

}

　　　　　
　　　　
　　　　　_siftBottomCons.constant = 0;//底部先出来
        _siftTopCons.constant = 0;//顶部再向下
        
        [UIView animateWithDuration:0.27 animations:^{
            [self.view layoutIfNeeded];
        }];