Array
(
    [d1y3RTWiNrizsunItEqOem:APA91bE80WtNUvuWSdFp7G0O9JaJj8Mj02mvpPqJ-KqnNEg_Jt_AIBNRXVmRVSslZ5_LZUICyCjtSZOJUS8jbDHBqkvPXSjPSPPrpD7JA0GywKb0vRz0gws] => Array
        (
            [error] => Array
                (
                    [code] => 404
                    [message] => Device unregistered.
                    [status] => NOT_FOUND
                    [details] => Array
                        (
                            [0] => Array
                                (
                                    [@type] => type.googleapis.com/google.firebase.fcm.v1.FcmError
                                    [errorCode] => UNREGISTERED
                                )

                        )

                )

        )

)