[Unity, AR] Error: “CS0619: UnityEngine.Network is obsolete”, When CloudAnchors is upgraded to Unity 2018.2

This time, I’ll introduce about Tips for those who use ARCore provided by Google with Unity. If you were developing with CloudAnchors on Unity 2017, and upgrading to the latest Unity 2018.2 (as of October 2018), you will encounter the error of above screen shot. “Assets/GoogleARCore/Examples/CloudAnchors/Scripts/CloudAnchorUIController.cs(85,62): error CS0619: `UnityEngine.Network’ is obsolete: `The legacy networking system has been removed in Unity 2018.2. Use Unity Multiplayer and NetworkIdentity instead.’ ” (I think... Read more