Buttons are causing a load screen and error [Meta Avatars SDK]

I'm trying to get meta avatars to work and I've followed all documentation. When playing the sample scenes from Avatars 2 my avatar moves perfectly but pressing any buttons causes a loading screen to appear and I get this error:

[ovrAvatar2 sampleAvatar] Error initializing OvrPlatform. Falling back to local avatar

UnityEngine.Debug:LogError (object,UnityEngine.Object)
Oculus.Avatar2.OvrAvatarLog:Log (Oculus.Avatar2.OvrAvatarLog/ELogLevel,string,string,UnityEngine.Object) (at Assets/Oculus/Avatar2/Scripts/OvrAvatarLog.cs:101)
Oculus.Avatar2.OvrAvatarLog:LogError (string,string,UnityEngine.Object) (at Assets/Oculus/Avatar2/Scripts/OvrAvatarLog.cs:159)
SampleAvatarEntity/<LoadCdnAvatar>d__21:MoveNext () (at Assets/Oculus/Avatar2/Example/Common/Scripts/SampleAvatarEntity.cs:134)
UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr)