SM-G950F S8 "Read Codes Problem" need help

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SM-G950F S8 "Read Codes Problem" need help

Hello, need help pls.

Log:

Welcome to Octoplus Box Samsung software version 2.7.0
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Platform: Samsung Android
Selected port: COM134
Selected model: SM-G950F
Operation: Read info
Reading info, please wait...
Please, press "OK" button on the phone to allow USB debugging.
Detected phone model: SM-G950F
Firmware compiled date: Tue Apr 24 22:46:43 KST 2018
PDA version: G950FXXU1CRDB
CSC version: G950FOWA1CRD1
SW version: G950FXXU1CRDB
Phone SN: RF8J701GDLA
Android version: 8.0.0 (R16NW)
Sales code: CPA
Country: PANAMA
HW platform: exynos5
HW Chip: exynos8895
HW Modem: SHANNON355
Security patch level: 2018-04-01
Warranty Void: 0
SIM 1 status: network locked
Codename: dreamltexx
Performed by 2.7.0 Software version.
-----------------------------------------------------------------------------------
Platform: Samsung Android
Selected port: COM134
Selected model: SM-G950F
Operation: Read Codes - Server
Detected phone model: SM-G950F
Firmware compiled date: Tue Apr 24 22:46:43 KST 2018
PDA version: G950FXXU1CRDB
CSC version: G950FOWA1CRD1
SW version: G950FXXU1CRDB
Phone SN: RF8J701GDLA
Android version: 8.0.0 (R16NW)
Sales code: CPA
Country: PANAMA
HW platform: exynos5
HW Chip: exynos8895
HW Modem: SHANNON355
Security patch level: 2018-04-01
Warranty Void: 0
SIM 1 status: network locked
Codename: dreamltexx
-----------------------------------------------------------------------------------
Connecting to server ..
Username: whisarmon
Connect to server successfull.
Checking smart card...
Smart card successfully checked.
Your balance: 100 credits.
-----------------------------------------------------------------------------------
Checking operation...OK
Rebooting phone
Searching for a phone. Please wait...
Can't kill external ADB references. Please, close all programs that use
ADB server.OK
Please keep phone's screen active!
Initializing exploit...OK
Initializing...OK
Reading HWID...OK
Reading NV Data...
An error has occurred on step NVS1
Read codes failed
Performed by 2.7.0 Software version.



I will wait carefully for your answer, thanks