[Troubleshoot]Soft Bricked. Won't fastboot flash system.img

I am trying to recover my phone by flashing back to stock using the Wugfresh toolkit. However the stock CM12S system image doesn't get pushed to the phone but everything else works. As a result, I'm stuck with a phone that cannot boot into the ROM but cannot be flashed using TWRP or toolkit either. I've already set the current status as "soft-bricked/bootloop." This is the error I'm getting:

target reported max download size of 1073741824 bytes
error: cannot load 'C:\Program Files (x86)\WugFresh Development\Bacon Root Toolk
it\data\Factory_Images\cm-12.1-YOG4PAS1N0-bacon-signed-fastboot\system.img'