I also saw Lake Error, but this time open it to unlock Knox and rmm
And from the octopus team you can see the correction
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-J600F
Operation: KnoxGuard Unlock
Detected phone model: SM-J600F
Firmware compiled date: Wed Oct 10 17:53:45 KST 2018
PDA version: J600FXXU3ARJ2
CSC version: J600FOJM3ARJ2
SW version: J600FXXU3ARJ1
Phone SN: RZ8KC08AZLW
Android version: 8.0.0 (R16NW)
Sales code: MID
Country: Iraq
HW platform: exynos5
HW Chip: exynos7870
HW Modem: SHANNON315
Security patch level: 2018-10-01
Warranty Void: 0
SIM 1 status: absent
SIM 2 status: absent
Codename: j6ltecis
Device firmware is currently not supported
Operation was failed!
Performed by 2.8.2.2 Software version.