p20 lite unlock problem

any solution guys
Chimera Mobile Phone Utility version: 19.16.1209 @ 2018-10-31
Printing phone history

Development Support
31/10/2018
12:35:57

Direct Unlock
31/10/2018
12:28:00

Factory reset
31/10/2018
12:14:51

Direct Unlock
31/10/2018
12:11:54

Direct Unlock
27/10/2018
14:05:40

Removing network lock...
Searching for manufacture port...
Testing connection...
Authenticating...
This may take a while.
Be patient! Do NOT disconnect the phone!
The device sent an invalid challenge.
Retry 2/5
The device sent an invalid challenge.
Retry 3/5
The device sent an invalid challenge.
Retry 4/5
The device sent an invalid challenge.
Retry 5/5
The device sent an invalid challenge.
Authentication with the device failed.
Finished at local time: [10.31.18 12:38:01]
WorkID: 46747894