wrong reason:
Sometimes you need to look at the compiler package introduced
Solution:
1. Click on the top left corner of Xcode scheme into Alamofire
2. ⌘B
Compile
3. Click on the top left corner of Xcode scheme replaced the main target
4. Run
Advertising time: brother iOS12 zero-based video tutorials (each chapter Jieke audition):
Reproduced in: https: //juejin.im/post/5d0718146fb9a07ef3766800