a520f imei repair failed

Chimera Mobile Phone Utility version: 22.62.1301 @ 2019-10-12
Printing phone history

Repair IMEI
2019-mm-10
3:51:55
PM

Repair IMEI
2019-mm-10
3:43:47
PM

Repair IMEI
2019-mm-10
3:23:22
PM

Repair IMEI
2019-mm-10
2:04:31
PM

Repair IMEI
2019-mm-10
1:59:28
PM

Repair started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-A520F
Timezone: Asia/Karachi
Android Version: 6.0.1 [MMB29K] [SDK 23]
Build Date: Mon Jun 17 09:27:13 KST 2019
PDA Version: FA60_A520FXXUBASF1
Phone Version: A520FXXUBASF1 [june 2019, rev1]
Board Platform: EXYNOS5
Modem Platform: SHANNON325
Serial Number: 00000000000
Imei: 00000000000000
Battery Status: 3.94V (58%)
Network Type: GSM
SIM Status: ABSENT,READY
Multisim Config: DSDS
Knox Version: v00
Warranty Bit: 1
Security Patch: 2016-12-01
Data Encryption State: unencrypted
Repair imei...
The operation is in progress. Be patient! Do NOT disconnect the phone!
Repair imei failed.
Finished at local time: [10.12.19 12:57:54]
WorkID: 75950047