sm-N975u unlock error(1) credits lost

[valiu]

Operation: Read Codes via Server
[ 12/20/2019 11:06:12 AM ] Selected model: SM-N975U
[ 12/20/2019 11:06:12 AM ] Software version: 38.11
[ 12/20/2019 11:06:12 AM ]
[ 12/20/2019 11:06:12 AM ] Checking Login and Password... OK
[ 12/20/2019 11:06:13 AM ] Ballance: 25 crd.
[ 12/20/2019 11:06:16 AM ] You have 25 credit(s) left. This operation takes 5 credits.Continue? Yes
[ 12/20/2019 11:06:20 AM ] Waiting for device to become ready... OK
[ 12/20/2019 11:06:22 AM ] Reading phone info...
[ 12/20/2019 11:06:22 AM ] Model: SM-N975U
[ 12/20/2019 11:06:22 AM ] Android version: 9
[ 12/20/2019 11:06:22 AM ] PDA version: N975USQS2ASJ8
[ 12/20/2019 11:06:22 AM ] CSC version: N975UOYN2ASJ8
[ 12/20/2019 11:06:22 AM ] Phone version: N975USQS2ASJ8
[ 12/20/2019 11:06:22 AM ] Product code: SM-N975UZKAATT
[ 12/20/2019 11:06:22 AM ] CSC country code: USA
[ 12/20/2019 11:06:22 AM ] CSC sales code: ATT
[ 12/20/2019 11:06:23 AM ] Phone SN: RF8M74FP4FH
[ 12/20/2019 11:06:23 AM ] IMEI: 359186101150062
[ 12/20/2019 11:06:23 AM ] HW version: REV1.0
[ 12/20/2019 11:06:23 AM ] RF cal date: 2019.07.30
[ 12/20/2019 11:06:23 AM ] Chip name: SM8150
[ 12/20/2019 11:06:23 AM ] Modem board: SM8150
[ 12/20/2019 11:06:23 AM ] Security patch: 2019-11-01
[ 12/20/2019 11:06:23 AM ] Boot Warranty bit: 0
[ 12/20/2019 11:06:23 AM ] SIM State: NETWORK_LOCKED
[ 12/20/2019 11:06:27 AM ] Initialization zTool... OK
[ 12/20/2019 11:06:28 AM ] Running zTool, please wait... OK
[ 12/20/2019 11:06:34 AM ] Reading data from phone... OK
[ 12/20/2019 11:06:40 AM ] Searching server... OK
[ 12/20/2019 11:06:42 AM ] Waiting for server answer... OK
[ 12/20/2019 11:06:44 AM ] Calculating... error (1)
[ 12/20/2019 11:06:47 AM ] Reboot phone and try again.
[ 12/20/2019 11:06:47 AM ] Check ADB drivers, USB cable. Don't use USB Hubs
[ 12/20/2019 11:06:47 AM ] If this repeated then reflash phone and make factory reset.
[ 12/20/2019 11:06:47 AM ]
[ 12/20/2019 11:10:54 AM ] Operation: Read Codes via Server
[ 12/20/2019 11:10:54 AM ] Selected model: SM-N975U
[ 12/20/2019 11:10:54 AM ] Software version: 38.11
[ 12/20/2019 11:10:55 AM ]
[ 12/20/2019 11:10:55 AM ] Checking Login and Password... OK
[ 12/20/2019 11:10:56 AM ] Ballance: 20 crd.
[ 12/20/2019 11:11:02 AM ] You have 20 credit(s) left. This operation takes 5 credits.Continue? No