Hoover Agility steam cleaner

\015 I have had my Agility for a few years had have not had an issue till now. When I went to use the hose attachment the water sprayed out of the attachement and sucked up fine but, I noticed at the same time I used the attachment water was pouring out the bottome of the machine. I went through a tank of water in no time-plus had to suck up all the water that had soaked the floor under the machine body. Any idea what could be causing the leakage in the base?..Thanks.Mary\015 – Hoover F6212-900 / F6215-900 SteamVac Agility Upright Vacuum