Problems When wanting to make flash 5065a.

SigmaKey 2.27.00 Qcom: Write firmware
Phone model: OT-5065
Baseband Processor: 8909
Detecting flash...eMMC, Flash size: 7.30 Gb
Hardware IMEI: Not found
Phone model: OT-5065
Writing flash 5065A-2AAVHN1
Preparing......Inconsistent file "File checksum check failed"

How can I solve this please?