S8+ unlock error 1

error 1 unlocking xfinity S8+

Operation: Read Codes via Server
Selected model: SM-G955U
Software version: 32.4

Checking Login and Password... OK
Ballance: 30 crd.
You have 30 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G955U
Android version: 8.0.0
PDA version: G955USQU3CRD4
CSC version: G955UOYN3CRD4
Phone version: G955USQU3CRD4
Product code: SM-G955UZVACCT
CSC country code: USA
CSC sales code: CCT
Phone SN: R28J63VLSXR
IMEI: 355988080
HW version: REV1.0
RF cal date: 2018.03.16
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2018-04-01
Boot Warranty bit: 0
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... OK
Searching Ramdump interface... COM6 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error (1)

Done with Samsung Tool PRO v.32.4