Impostor project has error


I downloaded the Impostor project from this link when switching the project to android I encounter 2 errors that I attached in the screenshot please someone guide me.


Assets\Scripts\Networking\PlayerObject.cs(5,20): error CS0234: The type or namespace name 'Fusion' does not exist in the namespace 'Photon.Voice' (are you missing an assembly reference?)

Assets\Scripts\Networking\PlayerObject.cs(24,33): error CS0246: The type or namespace name 'VoiceNetworkObject' could not be found (are you missing a using directive or an assembly reference?)