为什么在桥接头中额外的#import在swift中失败了？

Before I added a new dependency to my test project via CocoaPods, I have already added a C header file ('wahoo.h') and exposed it to the swift code via a bridging header file "wahoo-Bridging-Header.h". The test app could be compiled and run without any problem.Before I added a new dependency to my test proj