I can't backup my TA codes

I installed flashtool, and flashtool drivers to unlock my bootloader but i can't back up my TA codes with backup-TA.cmd. This is the error i recieved; http://ift.tt/26aedfM

I have Android 5.1 10.7.A.0.228. installed via Sony's Update Center.

My phone is rooted with KingoRoot and SuperSU installed.

What should i do? Thanks in advance.

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