Undefined symbols for architecture arm64

Question

I am getting a Apple Mach-O Linker Error everytime I import a file from CocoaPods.

Undefined symbols for architecture arm64:
  \"_OBJC_CLASS_$_FBSession\", r         


        

Answer 1

1. Go to target Build Settings.
2. set BUILD ACTIVE ARCHITECTURE ONLY = NO for both Debug and Release
3. Build and run