I'm receiving a ConnectionError when calling RedeemMatchmakerTicket from my server.
I'm calling RedeemMatchmakerTicket via the
PlayFabServerAPI.RedeemMatchmakerTicketAsync method in the C# SDK using the ticket and lobbyId from my client, which my client received from its call to Matchmake.
(In any event, I'm assuming that I'd receive a more specific error if the lobbyId or ticket were incorrect.)
Additionally, on the server, I'm setting PlayFabSettings.DeveloperSecretKey via the title_secret_key passed in via command line, and setting PlayFabSettings.TitleId via the title_id passed in via command line.
How should I proceed in debugging further?