Samsung a520f flash always fail

I TRIED TO FLASH FIRMWARE COMBINATION ...ALL GETTING FAILED AT SYSTEM ...
PLEASE HELP

LOG BELOW

Operation: Flash
Selected model: SM-A520F
Software version: 34.3

File analysis... OK
Total file size: 0x1175EEE11 (4469 Mb)
Searching USB Flash interface... COM5 detected
Setup connection... OK
Set PIT file... OK
Reading PIT from phone... OK
Sending sboot.bin.lz4... OK
Sending param.bin.lz4... OK
Sending cm.bin.lz4... OK
Sending boot.img.lz4... OK
Sending recovery.img.lz4... OK
Sending system.img.lz4... error
Done with Samsung Tool PRO v.34.3