Duplicate interface definition for class 'POPSpringAnimation' error

[edugonzlz]

When add in a Podfile use_frameworks! to work with Swift libraries appear an error in POPSpringAnimation.h in line where declare interface
the line:
@interface POPSpringAnimation : POPPropertyAnimation
the error:
Duplicate interface definition for class 'POPSpringAnimation'

[grp]

It's likely too difficult to debug this remotely; could you provide the full text of the error (including where it was seen as originally defined; the compiler being run; etc) or post a sample project to try locally? Thanks.