Missing Boot Loader
My mac book lost boot loader after it turned of because it ran out of battery and i forgot to not charger it. When I turn it on the stop logo came up and I can not boot into the system. i got this information (see the image below) from Disk Utility in the Recovery Mode
How can i fix it without re-install the system?
MacBook Pro, iOS 11.2, MD101 Late 2012