Water is leaking on the floor via the filter basket.
I have a Viking II hot tub that is approx 7 years old.

When the tub is running I get water leaking into the bottom of the tub, I also see water coming out of the side of filter basket. The filter basket is white, which is seated into a black basket which has a small hole.

This small hole is there to let water drain down if there is any water build up, but water is coming up out of that hole and then leaking to the bottom of the tub.