Recording Bot using Skype.bot.media - azure

Question

We are creating a bot that can join the team meeting and it can start the recording as it joins the team meeting. But we are getting this error(Expected not null
Parameter name: client). I am attaching the code below:
when debugger goes to CreateLocalMediaSession() session method then at that method it gives the error.(Expected not null
Parameter name: client)
public async Task<ICall> JoinCallAsync()
{
// A tracking id for logging purposes. Helps identify this call in logs.
var scenarioId = Guid.NewGuid();
var (chatInfo, meetingInfo) = JoinInfo.ParseJoinURL("https://teams.microsoft.com/l/meetup-join/19:meeting_YTI5NDQ2ODQtMmNlNy00YTBhLTg2NTMtYmZmOGIyMzdhMTgw#thread.v2/0?context=%7B%22Tid%22:%22204d6395-ea6c-4e64-abea-e04cd30845e2%22,%22Oid%22:%225a95f69b-70e2-40d3-8b9a-5810ffcc6ec9%22%7D");
var tenantId = (meetingInfo as OrganizerMeetingInfo).Organizer.GetPrimaryIdentity().GetTenantId();
var mediaSession = this.CreateLocalMediaSession(scenarioId);
var joinParams = new JoinMeetingParameters(chatInfo, meetingInfo, mediaSession)
{
TenantId = tenantId,
};
if (!string.IsNullOrWhiteSpace("bot"))
{
// Teams client does not allow changing of one's display name.
// If the display name is specified, we join as an anonymous (guest) user
// with the specified display name. This will put the bot in lobby
// unless lobby bypass is disabled.
joinParams.GuestIdentity = new Identity
{
Id = Guid.NewGuid().ToString(),
DisplayName = "bot",
};
}
var statefulCall = await this.Client.Calls().AddAsync(joinParams, scenarioId).ConfigureAwait(false);
statefulCall.GraphLogger.Info($"Call creation complete: {statefulCall.Id}");
return statefulCall;
}
Code for creating local media session:
private ILocalMediaSession CreateLocalMediaSession(Guid mediaSessionId = default)
{
try
{
// create media session object, this is needed to establish call connections
return this.Client.CreateMediaSession(
new AudioSocketSettings
{
StreamDirections = StreamDirection.Recvonly,
// Note! Currently, the only audio format supported when receiving unmixed audio is Pcm16K
SupportedAudioFormat = AudioFormat.Pcm16K,
ReceiveUnmixedMeetingAudio = true //get the extra buffers for the speakers
},
new VideoSocketSettings
{
StreamDirections = StreamDirection.Inactive
},
mediaSessionId: mediaSessionId);
}
catch (Exception e)
{
_logger.Log(System.Diagnostics.TraceLevel.Error, e.Message);
throw;
}
}
We are creating a bot that can join the team meeting and it can start the recording as it joins the team meeting. But we are getting this error(Expected not null
Parameter name: client). I am attaching the code below:
error facing:
enter image description here