Adding Firebase iOS SDK with cocoapads results in no library error

Question

I added the Firebase iOS SDK with cocoapods, and after integration I tried to run the project and got the missing library:

ld: library not found for -lGoogleToolboxForMac

clang: error: linker command failed with exit code 1 (use -v to invoke the call)

And I found the exact same question, https://stackoverflow.com/a/166268/ and it tried its answer, and it did not work for me.

I am using Xcode 7.3.1 and my project is a hybrid project.