A320FL unlock error (1)

Checking Login and Password... OK
Ballance: 35 crd.
You have 35 credit(s) left. This operation takes 5 credits.Continue? Yes
Searching Samsung modem... detected COM116
Reading phone info... OK
Model: SM-A320FL
AP version: A320FLXXS2BRA9
CSC version: A320FLEVR1BQI2
CP version: A320FLXXS2BRA1
Product code: EVR
Phone SN: RF8J91ARZBZ
Unique number: C00004DA3BD4E14
Searching Samsung diag port... detected COM129
Reading phone info... OK
CP version: A320FLXXS2BRA1
CP build: Jan 8 2018 15:35:57
Reading data from phone... error (1)

Done with Samsung Tool PRO v.30.8


Where is the problem?