Symbol not found: _sel_hash

[tteabag]

dyld: Symbol not found: _sel_hash
Referenced from: /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
Expected in: /Users/kv/Library/Developer/Xcode/DerivedData/objc-dhysxkizblskplbiwqtviqdmfcvm/Build/Products/Debug/libobjc.A.dylib
in /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation

how to fix it

[superChan]

我也是，一模一样的，好像和升级系统有关系。

[RobbieW]

我也一样的，就是升级系统的问题。