Undefined symbols for architecture arm64 - Cocoa Pods

Question

I am getting this problem when I try to build my app:

I got the problem when after trying to update my Cocoa pods.

EDIT:

Is this what you were talking about @nunofmendes?

EDIT 2:

My pods project looks like this:

Answer 1

You will have to check your CocoaPods projects. In Build Settings of each project, check the Architectures.

You should have:

Architectures: $(ARCHS_STANDARD)
Valid Architectures: armv7 armv7s arm64

This occurs when some projects aren't building to ARM64 when you are trying to compile to an 64bit device (like iPhone 5 or greater)

EDIT#1
You can also try setting Build For Active Architectures to YES
Like in the following image (ignore the valid architectures field in this image):