This version of Unity is unsupported.
Removed

UnityWebRequest.GetAudioClip

Obsolete UnityWebRequest.GetAudioClip is obsolete. Use UnityWebRequestMultimedia.GetAudioClip instead.
Upgrade to GetAudioClip

Declaration

public static Networking.UnityWebRequest GetAudioClip(string uri, AudioType audioType);

Description

OBSOLETE. Use UnityWebRequestMultimedia.GetAudioClip().