help with this log

Í'm trying to repair imei to a altatel a2 xl 8050d
but i get this error

SigmaKey 2.28.07b2 ADB: Repair IMEI
* daemon not running. starting it now *
* daemon started successfully *
^ Dispositivo ADB
Version: Linux version 3.10.72+ (android@tabletbuild23) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Tue Feb 13 15:31:32 CST 2018
Phone model: TCL 8050D
Android 5.1; Firmware: LMY47I; Date: Sun Feb 25 15:05:06 CST 2018
Version: LMY47I release-keys
Baseband Firmware: MOLY.WR8.W1449.MD.WG.MP.V18.P7, 2018/02/25 15:07
Baseband Processor: MT8321M
Reading software IMEI.....Please send
C:\Users\HP\Documents\SigmaKey\temporary backup\0151139222\TCL_8050D_LMY47I_Sun Feb 25 150506 CST 2018 (1).skb
file to support@sigmakey.com
Failed