BLA-L29 repair imei error

hi sigma team

i have got this error when try repair imei BLA-L29 android 8.0


this is logo

SigmaKey 2.27.18 HiSi: Repair IMEI
Connecting....
?Android Adapter PCUI (COM78)?, Provider: Huawei Incorporated, Driver ver.: 2.0.6.725, Date: 17/03/37, USB\Vid_12D1&Subclass_13&Prot_22
Firmware: System 8.0.0.046(07CA), Date: Sat Mar 17 12:49:37 CST 2018, Provider: hw/meafnaf
Boot Version: System 8.0.0.046(07CA)_BOOT, FastBoot Version: Chipset-boston8.0.0.001(023F)_FASTBOOT
Recovery Version: (unknow), System Version: System 8.0.0.046(07CA)
Removing firmware protection...
F74AD0AF985123DA2961BA26BEE3E4C59561A9C49A573BD27D 69842ECCFFE1919D5FA1B786516FDA4361F4
Unexpected response from the phone