ARCore SDK for Unity v1.18.0 is not suitables for Unity2019.4.2f1?

I dont use Package Manager,just import the ARCore SDK for Unity v1.18.0 into Unity 2019.4.2f1.There is a lot of Error in Console.


I want the face tracking sample in ARCore SDK for Unity v1.18.0 so i dont use any AR package in Package Manager.

I solve the problem by glancing issues in ARCore SDK for Unity in Github.
use Window > Package Manager to install the Multiplayer HLAPI and XR Legacy Input Helpers packages.