I had another coffee pot do this previously but that one was so old I threw it out. This one is only a few months old as is everything else I own.
I'm sure this must happen to a lot of them after seeing the reason, that's why I'm posting it. . I took the bottom off.... 4 regular phillips screws and 2 torx just so the average homeowner can't get it off
There's two tubes, one comes from the water reservoir to the heating element. Within this tube is a little check valve.
This apparently prevents the heated water from going back up into the reservoir.
You can just squeeze it out of the tube, you're going to probably have something stuck in it. On mine it appeared to be a piece of silicon, possibly from a o ring or something... . I'm not sure how it got in there.
It's amazing though, I looked at that little valve and started thinking how many coffee pots must have be thrown away because of debris stuck in that valve. If you had a big enough piece of coffee ground it could certainly block it up.