Checked the in feed at the back? When I installed mine, I notice a small trickle of water on the floor at the front, turns out the threads for attaching the in feed were gritty and it was leaking from there.
I'm checking later (it's a ballache to get behind) but it's been working fine since January and suddenly there's water on the floor. Not sure the feed would suddenly do that, unless an seal or o-ring has gone?
It's six years old - and it doesn't seem to be leaking out of the front. The water is appearing under the front left of the machine.