*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'An instance 0x7fe54e163370 of class UIView was deallocated while key value observers were still registered with it. Current observation info: <NSKeyValueObservationInfo 0x7fe54e12ffe0> (
<NSKeyValueObservance 0x7fe54bef76d0: Observer: 0x7fe54e1594e0, Key path: frame, Options: <New: YES, Old: YES, Prior: NO> Context: 0x0, Property: 0x7fe54e163440>
<NSKeyValueObservance 0x7fe54e15
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'An instance 0x7fe54e163370 of class UIView was deallocated while key value observers were still registered with it. Current observation info: <NSKeyValueObservationInfo 0x7fe54e12ffe0> ( <NSKeyValueObservance 0x7fe54bef76d0: Observer: 0x7fe54e1594e0, Key path: frame, Options: <New: YES, Old: YES, Prior: NO> Context: 0x0, Property: 0x7fe54e163440> <NSKeyValueObservance 0x7fe54e15