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
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