[LayoutConstraints] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don&#39;t want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don&#39;t expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    &#34;&lt;NSLayoutConstraint:0x600000cfb250 &#39;BIB_Trailing_CB_Leading&#39; H:[_UIModernBarButton:0x7f97d7c15120]-(6)-[_UIModernBarButton:0x7f97d9810da0&#39;Grocery Items&#39;]   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cfb2a0 &#39;CB_Trailing_Trailing&#39; _UIModernBarButton:0x7f97d9810da0&#39;Grocery Items&#39;.trailing &lt;= _UIButtonBarButton:0x7f97d7f0bbd0.trailing   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cfbe30 &#39;UINav_static_button_horiz_position&#39; _UIModernBarButton:0x7f97d7c15120.leading == UILayoutGuide:0x6000016e9340&#39;UIViewLayoutMarginsGuide&#39;.leading   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cfbf20 &#39;UINavItemContentGuide-leading&#39; H:[_UIButtonBarButton:0x7f97d7f0bbd0]-(0)-[UILayoutGuide:0x6000016e9260&#39;UINavigationBarItemContentLayoutGuide&#39;]   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cf90e0 &#39;UINavItemContentGuide-trailing&#39; UILayoutGuide:0x6000016e9260&#39;UINavigationBarItemContentLayoutGuide&#39;.trailing == _UINavigationBarContentView:0x7f97d7c0cb40.trailing   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cf7e80 &#39;UIView-Encapsulated-Layout-Width&#39; _UINavigationBarContentView:0x7f97d7c0cb40.width == 0   (active)&gt;&#34;,
    &#34;&lt;NSLayoutConstraint:0x600000cf94a0 &#39;UIView-leftMargin-guide-constraint&#39; H:|-(0)-[UILayoutGuide:0x6000016e9340&#39;UIViewLayoutMarginsGuide&#39;](LTR)   (active, names: &#39;|&#39;:_UINavigationBarContentView:0x7f97d7c0cb40 )&gt;&#34;
)

Will attempt to recover by breaking constraint 
&lt;NSLayoutConstraint:0x600000cfb250 &#39;BIB_Trailing_CB_Leading&#39; H:[_UIModernBarButton:0x7f97d7c15120]-(6)-[_UIModernBarButton:0x7f97d9810da0&#39;Grocery Items&#39;]   (active)&gt;

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in &lt;UIKitCore/UIView.h&gt; may also be helpful.
(lldb)