redmi 6 pro mi account error

Device : Xiaomi Redmi 6 Pro
Operation : Disable Mi Account
Checking for existing devices...Found
Port : Qualcomm HS-USB QDLoader 9008 (COM8)
Driver Info : Qualcomm Incorporated, qcusbser.sys, 2.1.2.2
Opening Port...OK
Init Handshake Sequence...OK
Hardware ID : E1600400 [8953] 00000000
OPK_DATA : 079E496E26A477B120DFCD85DF7E4AD067164D8292DDD37993 0D5891E3D8240B
Initializing Protocol...OK
Preparing Loader...Done
Sending Loader [Mi6Pro]...Write Error!
Please use correct loader and check USB port / cable.
Operation Finished.
QcFire Ver. 4.1

from GSM-Forum http://bit.ly/2K9Daok
via IFTTT