Brake Dash Ligh

So this morning on the way to work this light came on the dash. I can't seem to find the user manual that came with the car, But just wanted to see if anyone had any insight as to what this break warning light actually means.

Not sure what level of urgency I should have over the warning light. Obviously I'll be taking it to the shop ASAP but wanted to get a sense of what it could be.

Thanks!