Flashing red break light

I have a 2015 Subaru Legacy, with 80K. I was driving down the highway the other day and looked down to a flashing red break light. It has not turned off since. My breaks are working fine, and my e-break is functioning properly. My dashboard is telling “electronic parking break failure” and telling me to check my owners manual- but that is just telling me to not operate my car because my e-break isn’t functioning, which it is. I just bought this car but not from a subaru dealership. I am at a loss, and other forms have not helped me.