huawei p10 lite unlock bootloader failed

huawei p10 lite android 8 . mui8
unlock bootloader failed..
log:
>>>>Searching mobile phones...
Get Hisi cpu Mobile Phones...
>>> Get Mobile Port: COM5
>>>>Device identification :
Android Adapter PCUI
>>>>Switch Mobile to Auth Mode
PCB SN: o permission
Mobile SN: no permission
Mobile Code: mission


Read information timeout....
Fail