If you’ve installed CyanogenMod 14 or 14.1, you’ll need to flash GApps (Google Apps) to unlock the full functionality of Google services. This guide will walk you through the steps to download and install the CM 14 GApps package.
The Official CyanogenMod 14.1 Nightly ROMs are now available for download, and flashing the compatible GApps is essential to access apps like Google Play Store, Gmail, YouTube, and other Google services.

Why Do You Need GApps for CyanogenMod 14 / 14.1?
GApps (Google Apps) are critical for running Google’s ecosystem services on custom ROMs. Since CyanogenMod 14/14.1 ROMs are based on Android Nougat, they don’t include GApps by default due to licensing restrictions. Without GApps, your phone won’t have access to the Google Play Store or essential apps like Gmail, YouTube, and Google Maps.
By flashing the GApps package, you’ll be able to run Google Play Services and download your favorite apps directly from the Play Store.
how to download this gaps?