N950U tmobile unlock error

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-N950U
Android version: 8.0.0
PDA version: N950USQS5CRG9
CSC version: N950UOYN5CRG9
Phone version: N950USQS5CRG9
Product code: SM2N950UZKATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: R28K72S53JJ
IMEI: 358505086467921
HW version: REV1.0
RF cal date: 2018.08.01
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2018-08-01
Boot Warranty bit: 0
Searching Samsung diag port... detected COM881
Reading phone info... OK
Reading data from phone... error (0), skip
Rebooting phone... OK
Waiting ADB device... OK
Rebooting phone... OK
Waiting ADB device... OK
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
Rebooting to upload... OK
Searching Ramdump interface... COM376 detected
Reading data from phone... OK
Calculating... error (0)

Done with Samsung Tool PRO v.33.8