sm-j327t1 unlock problem z3x

Operation: Unlock
Selected model: SM-J327T1
Software version: 31.0

Checking Login and Password... OK
Ballance: 30 crd.
You have 30 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J327T1
Android version: 7.0
Product code: SM2J327TZKATMK
Phone version: J327T1UVU1AQK6
PDA version: J327T1UVU1AQK6
CSC version: J327T1TMK1AQK6
CSC country code: USA
CSC sales code: TMK
HW version: REV0.1
Phone SN: RV8JA1A3T3F
Chip name: EXYNOS7570
Modem board: SHANNON305
Security patch: 2017-11-01
RF cal date: 20171023
IMEI: 352001094343623
Searching Samsung diag port... detected COM27
Reading phone info... OK
CP version: J327T1UVU1AQK6
CP build: Nov 20 2017 14:50:17
Reading data from phone... error (1)

Done with Samsung Tool PRO v.31.0

help me how to solve this