G960f unlock error

Operation: Read Codes via Server
Selected model: SM-G960F
Software version: 36.0

Checking Login and Password... OK
Ballance: 50 crd.
You have 50 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G960F
Android version: 9
PDA version: G960FXXU3CSD4
CSC version: G960FOXM3CSD4
Phone version: G960FXXU3CSD3
Product code: SM-G960FZKDPHN
CSC country code: The Netherlands
CSC sales code: PHN
Phone SN: R58M15BGFQW
IMEI: 354663104324956
HW version: MP 0.900
RF cal date: 20190128
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-04-01
Boot Warranty bit: 0
SIM State: ABSENT,ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem required
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (1)