LogIn Debug : Failed: PlayFab Failed: GetMatchmakingTicket: /Match/CancelMatchmakingTicket: The ticket is already completed. UnityEngine.Debug:Log(Object)

When a matchmaking ticket is created, it is in the “WaitingForPlayers” status. Then the queue is looking for other tickets to match this ticket. When the ticket is matched, its status turns to “Matched”. At this stage, the matchmaking ticket cannot be cancelled. Please refer to: https://docs.microsoft.com/en-gb/rest/api/playfab/multiplayer/matchmaking/cancelmatchmakingticket?view=playfab-rest#definitions

The error message: "The ticket is already completed." indicates that you were trying to cancel a ticket that could be already matched, which is an expected behaviour. Please check the ticket status using GetMatchmakingTicket function, if that is not the case, please let me know.