AutoLayout error

[stefanocdn]

Hi, when running the sample, I get this error due to layout 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:0x166ac530 V:[UILabel:0x166d6de0(21)]>",
"<NSLayoutConstraint:0x166a5cf0 V:[UIButton:0x166a7db0(30)]>",
"<NSLayoutConstraint:0x166bdf50 V:|-(8)-[UILabel:0x166d6de0]   (Names: '|':AXSampleSwipableHeaderView:0x166d0d30 )>",
"<NSLayoutConstraint:0x166d4220 V:[UILabel:0x166d6de0]-(8)-[UIImageView:0x166c1c50]>",
"<NSLayoutConstraint:0x166bfb00 V:[UIButton:0x166a7db0]-(8)-|   (Names: '|':AXSampleSwipableHeaderView:0x166d0d30 )>",
"<NSLayoutConstraint:0x166abee0 V:[UIImageView:0x166c1c50]-(8)-[UIButton:0x166a7db0]>",
"<NSAutoresizingMaskLayoutConstraint:0x16558800 h=-&- v=-&- AXSampleSwipableHeaderView:0x166d0d30.height == UIView:0x166d5360.height - 388.5>",
"<NSAutoresizingMaskLayoutConstraint:0x16569b60 h=--& v=--& V:[UIView:0x166d5360(455)]>"

)

 Will attempt to recover by breaking constraint 
 <NSLayoutConstraint:0x166a5cf0 V:[UIButton:0x166a7db0(30)]>

Does anybody get the same error? Any idea where it comes from?