Problem in unlocking j510fn via server.Searching Ramdump interface... not found

Checking Login and Password... OK
Ballance: 20 crd.
You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J510FN
Android version: 7.1.1
Product code: SM2J510FZKUAUT
Phone version: J510FNXXU2BQJ3
PDA version: J510FNXXU2BQK6
CSC version: J510FNOPT2BQK6
CSC country code: portugal
CSC sales code: OPT
HW version: MP 0.300
Phone SN: RV8J527VJHV
Chip name: MSM8916
Modem board: MSM8916
Security patch: 2017-08-01
RF cal date: 2017.05.28
IMEI:
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
Searching Ramdump interface... not found
Done with Samsung Tool PRO v.30.8