I've just had a similar issue with my MG ZS EV earlier today, or yesterday actually as it's past midnight...
In my case though, I started the car as usual to go shopping (ac off / heating off / radio on after starting the car).
Reversed onto the street from my parking space, switched to driving mode and started driving for about 300m up to the end of my small street that leads to another small street that connects other 2 bigger roads.
I was driving with no more than 20 mph when the car stopped suddenly right when I was getting to the end of the street and signalled the 2 error messages :
As you can see the 12V battery is 50%+ (so 12V+) range is over 50% (probably around 75% ), but still it's scary how the car stopped while running.
I could have had really high speed on a motorway somewhere, god knows what would have happened then.
The strange thing though, after getting these errors, the car wouldn't stop!!
Start/Stop button wasn't working anymore, so the car wouldn't close with the key.
Got rescued back home where the stop button worked, but when I tried to start the car, it didn't want to switch to Ready state anymore, and keeps signalling the errors.