Image transfer object read - Service not allowed Deciphering failed

Hi,
I have successfully established HLS authentication with meter and Gurux. I tried to read Image transfer object, and I am getting Exception response Service not allowed Exception.Deciphering failed.
Below is the log:
14:34:36 Read object type ImageTransfer index: 2
TX: 00 01 00 30 00 01 00 20 C8 1E 30 00 00 0F 9A 04 43 53 B4 AC 5F A5 FC D5 C9 7E C8 F3 12 95 91 3F AD AB 46 C1 BA 2E B4 49
14:34:40
RX: 00 01 00 01 00 30 00 1C CC 1A 30 00 00 07 22 B0 B1 52 D1 0F 66 DB 00 17 95 0C 5F D9 B9 24 27 DE 9F 77 A4 10
14:34:40 Read object type ImageTransfer index: 3
TX: 00 01 00 30 00 01 00 20 C8 1E 30 00 00 0F 9B B6 1B 5B 20 38 2A 63 BB 09 01 5C 1C 1C 5F 8B BD 55 4C 98 62 EE CE 63 2A C2
14:35:10 Data send failed. Try to resend 1/3
14:35:13
RX: 00 01 00 01 00 30 00 03 D8 01 05
14:37:13 Send Keep Alive
TX: 00 01 00 30 00 01 00 20 C8 1E 30 00 00 0F 9C 45 48 7B 0C 16 25 CF BF 0C F3 54 56 20 1E F6 FC 66 75 66 B9 95 B1 6A 0C B6
14:37:16
RX: 00 01 00 01 00 30 00 03 D8 01 05
14:37:16 Release request
TX: 00 01 00 30 00 01 00 05 62 03 80 01 00
14:37:18
RX: 00 01 00 01 00 30 00 03 D8 02 03

Please suggest how to resolve.

Regards
Pooja