First, welcome to the forum!
Second, I would check the system for leaks - usually a keg issue, which may be solved with something as simple as keg lube applied to posts and lid o rings, or something as complex as a regulator leak. I use a product that does a good job at bubbling when a leak is covered, but you can go with a Starsan solution and spray down the suspected areas to pinpoint the leak. Good luck!