G955f read cert erorr (1)

Unlock4samsung Wednesday, May 9, 2018

How to read cert file g955f?

Operation: Read CERT DIAG
Selected model: SM-G955F
Software version: 31.5.1

Searching Samsung modem... detected COM113
Reading phone info...
Model: SM-G955F
AP version: G955FXXU1CRC7
CSC version: G955FOXM1CRC7
CP version: G955FXXU1CRC7
Product code: XEO
Phone SN: RF8JB25X1YN
IMEI: 357821088743560
Unique number: CE11171B58DD18B70C
Searching Samsung diag port... detected COM114
Reading phone info... OK
CP version: G955FXXU1CRC7
CP build: Mar 15 2018 18:04:41
Reading data from phone... error (1)
Done with Samsung Tool PRO v.31.5.1

knox is 0
dm+modem+adb active but still same :(