Huawei P20 lite ANE-LX1 Imei repair error

hi have a problem with this
attached work sheet



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: [11.11.18 20:23:31]
WorkID: 47393399


and idea chimera plz