DC to Dc error. Car runs electric petrol engine not starting

I need help I've got a gen 2 2006 prius that randomly as I was braking from 90kmh to take a turnoff all of a sudden popped a lot of warning lights and the red triangle. Engine cut out and wouldn't start again since. Luckilly I was relatively close to home so I could drive home on electic motor but I'm at a loss as to what the cause might have been.
I did test the crank manually and I am able to crank it by hand.

Could this be a faulty 12v battery? Would it even work electric if the 12v was to blame?

 

P0A94

 

Any other help here would be greatly appreciated. The car "starts" goes forward and back on the battery. No other error code except for the engine light illuminated and p0a94. And the obv red triangle. The engine won't even make a noise like an attempt to start.. I want to order an inverter online but I need to be sure this will be an inverter issue