iOS xcode Build Error symbols not found for arm64: _OpenInAppPreviewFromCache Undefined symbol

I’ve attached the following log, I’m really unsure with why the build isn’t working? I tried setting it to armv7 and still doesn’t work. Anyone face anything similar?

Could be a few different reasons.

Do you have a class called NativeWrapperIOS where you define native (extern) methods ?
It looks like you declared such a method (in C#) but never provided an implementation for it (OpenInAppPreviewFromCache)