Missing AppAuth.h with playservices updated

[Midget4567]

Missing AppAuth.h with playservices updated

[Midget4567]

I actually figured it out, it was a fundamental failure to understand what cocoapods is and how to use it. For anyone else who is as ignorant as me, here was the solution. I wasn't having any luck installing cocoapods on my mac because of a bunch of random errors in the terminal.

First I downloaded HomeBrew on my mac that automatically fixed the errors I was having. Then I used homebrew to install cocoapods in the terminal with 'brew install cocoapods'.
Then I followed this link roughly https://stackoverflow.com/questions/20755044/how-do-i-install-cocoapods for the pod installation process in the xcode project folder.

There was an error at the install stage, to remove this error I removed the '~> 1.2.0' code from inside the autogenerated podfile, then the installation worked correctly. Then I had to open the .workspace file instead of the xcode proj file.

Finally the error went away. Hope it helps!