IOS Undefined Symbols for Architecture arm64 solution

Undefined Symbols for Architecture arm64:
"_objc_class_$_yycache", referenced from:
Objc-class-ref in LFNETWORKING.O
"_objc_class_$_afhttprequestserializer", referenced from:
Objc-class-ref in LFNETWORKING.O
"_objc_class_$_afjsonresponseserializer", referenced from:
Objc-class-ref in LFNETWORKING.O
"_objc_class_$_afhttpsessionmanager", referenced from:
Objc-class-ref in LFNETWORKING.O
Ld:symbol (s) not found for architecture arm64

There are several possibilities for this error:

1.Build Setting->architectures See if the arm64 instruction set is included

2. If the library is imported with Cocoapods, Build setting->linking->other Linker Flags, add$(inherited)

Temporarily list these kinds, and later encountered a supplement

IOS Undefined Symbols for Architecture arm64 solution