n950f unlocking error

Chimera Mobile Phone Utility version: 22.18.0611 @ 2019-08-31
Printing phone history

Patch Certificate
8/31/2019
1:41:47
PM

Read Codes Online
8/31/2019
1:39:47
PM

Knoxguard Unlock
8/31/2019
1:38:04
PM

Rmm Unlock
8/31/2019
1:36:48
PM

Knoxguard Unlock
8/31/2019
1:35:39
PM

Read codes started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-N950F
Sales Code: TCE
Country Code: MEXICO
Timezone: Asia/Karachi
Android Version: 8.0.0 [R16NW] [SDK 26]
Build Date: Wed Nov 14 03:13:44 KST 2018
PDA Version: N950FXXS5CRK2 [november 2018, rev2]
Phone Version: N950FXXS5CRI2 [september 2018, rev2]
CSC Version: N950FOWA5CRI1 [september 2018, rev1]
Product Code: TCE
HIDSw Version: N950FXXS5CRK2/N950FOWA5CRI1/N950FXXS5CRI2/N950FXXS5CRK2
Board Platform: EXYNOS5
Modem Platform: SHANNON355
Serial Number: R28J83Q3N4L
Imei: 358333072216297
Unique Number: CE0817181C785CE50D7E
Connections: AT,MTP
Battery Status: 4.06V (72%)
Network Type: GSM
SIM Status: ABSENT
Multisim Config: SS
Knox Version: v30
Warranty Bit: 1
Security Patch: 2018-11-01
Data Encryption State: unsupported
Reading codes online...
Checking modem version.
Restarting phone.
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!
Failed. Trying again.
Restarting phone.
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!
Failed. Trying again.
There is an active patchcert on your phone. Please remove it.
Finished at local time: [08.31.19 18:51:39]
WorkID: 71590131