New User trying to recover failed server - Container error - connection refused

I am new to docker and I am working with a company that has used it for a while, but has no idea how it works. The computer is was on crashed and I am trying to rebuild the setup we had. I know that there are supposed to be 3 containers, and I have three containers running, they are all showing green in my dashboard. But one of them is giving me a connection refused error. Where can I start looking to get this resolved?

connect ECONNREFUSED at TCPConnectWrap.afterConnect