n950f unlock failed error(1)

Operation: Read Codes via Server
Selected model: SM-N950F
Software version: 30.8

Checking Login and Password... OK
Ballance: 20 crd.
You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
Searching Samsung modem... detected COM111
Reading phone info... OK
Model: SM-N950F
AP version: N950FXXU3BRA2
CSC version: N950FOXM2BRA1
CP version: N950FXXU3BRA2
Product code: XEF
Phone SN: R58JB5TGJWN
Unique number: 988AD035464256524230
Searching Samsung diag port... detected COM110
Reading phone info... OK
CP version: N950FXXU3BRA2
CP build: Jan 8 2018 18:38:01
Reading data from phone... error (1)

Done with Samsung Tool PRO v.30.8

solution?