Can not send SmeTicketCard to expert Teams channel - Operation returned an invalid status code 'Forbidden'

[RonHunk]

var resourceResponse = await this.SendCardToTeamAsync(turnContext, smeTeamCard, expertTeamId, cancellationToken).ConfigureAwait(false);

fail: Microsoft.Teams.Apps.FAQPlusPlus.Bots.FaqPlusPlusBot[0]

  Error processing message: Operation returned an invalid status code 'Forbidden' 

Microsoft.Bot.Schema.ErrorResponseException: Operation returned an invalid status code 'Forbidden'

at Microsoft.Bot.Connector.Conversations.CreateConversationWithHttpMessagesAsync(ConversationParameters parameters, Dictionary`2 customHeaders, CancellationToken cancellationToken)