Samsung g935fd android 8.0 patch certificate error how to done?

Waiting ADB device... OK
Reading phone info...
Model: SM-G935F
Android version: 8.0.0
PDA version: G935FXXU2EREM
CSC version: G935FOXY2ERF1
Phone version: G935FXXU2ERD6
Product code: SM-G935FZKUSER
CSC country code: Russia
CSC sales code: SER
Phone SN: RF8H30QBYCZ
IMEI: 268765234567894
HW version: MP 0.801
RF cal date: 20160307
Chip name: EXYNOS8890
Modem board: SHANNON335
Security patch: 2018-04-01
Boot Warranty bit: 1
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... OK
Writing zTool... OK
Initialization zTool... error (1)

Done with Samsung Tool PRO v.33.4