I'm not sure I understand where it is leaking, Is it where the hose connects? If so, is there a washer in the hose?

I believe so- like a little rubber ring? It is leaking where the hose connects

I have had a number of small portable machines in the past. If they are all the same the threads of the inlet on the machine is plastic. To be clear it is leaking where the hose from the faucet connects at the machine? I assume you are not disconnecting the hose from the machine each time you use it. Just disconnecting from the sink, correct?

It is vey easy to cross thread (Screw the hose on at the wrong angle) the plastic inlet with the metal hose threads. Try using some teflon tape (white plumbing tape very cheap at hardware stores). Wrap one layer around the inlet threads and very carefully align the hose thread and screw them together. Do not force the hose to connect if it does not connect smoothly. The tape should help prevent any drips if the hose coupling is the correct size, threaded onto the machine correctly and the threads have not already been damaged. There are many better qualified than me to help you. I just have had the same problem. Good luck.

I am having the same problem but I've had my portable washer for like 3 years and it just started doing this. I bought all new parts and it's still leaking from faucet. I have no idea what to do. Any tips?