SM-G935F Cert not being Patch [Answered]

Hello Team Z3X,

i'm trying to patch CERT for samsung SM-G935F but facing following error

please assist...

Operation: Patch Certificate
Selected model: SM-G935F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-G935F
Android version: 8.0.0
PDA version: G935FXXU5ESD2
CSC version: G935FODD5ESE1
Phone version: G935FXXU5ESD2
Product code: SM-G935FZDAINS
CSC country code: India
CSC sales code: INS
Phone SN: RZ8H91KER5A
IMEI: 357220079438423
HW version: MP 0.801
RF cal date: 20160321
Chip name: EXYNOS8890
Modem board: SHANNON335
Security patch: 2019-05-01
Boot Warranty bit: 1
SIM State: ABSENT,ABSENT
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.37.0