g935f imei repair failed

Repair started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G935F
Sales Code: ZTR
Country Code: Brazil
Timezone: Asia/Kathmandu
Android Version: 8.0.0 [R16NW] [SDK 26]
Build Date: Fri Oct 12 13:21:35 KST 2018
PDA Version: G935FXXS3ERJ8 [october 2018, rev8]
Phone Version: G935FXXU3ERJ8 [october 2018, rev8]
CSC Version: G935FZTR3ERJ1 [october 2018, rev1]
Board Platform: EXYNOS5
Modem Platform: SHANNON335
Serial Number: RF8HB18EB3D
Imei: 000000000000000
Battery Status: 3.69V (18%)
Network Type: GSM
SIM Status: READY,ABSENT
Multisim Config: DSDS
Knox Version: v30
Warranty Bit: 1
Security Patch: 2018-10-01
Data Encryption State: encrypted
Repairing IMEI...
Reading and storing secure image. Be patient! Do NOT disconnect the phone!
Checking secure image.
Preparing.
Please unlock screen if closed.
Reading modem. Be patient! Do NOT disconnect the phone!
Calculating. Be patient! Do NOT disconnect the phone!
Repair imei failed.
Unable to Repair imei
Finished at local time: [12.14.18 22:25:37]
WorkID: 49251677