It probably means that you have set up a manager connection that is failing. If all your connections are from 127.0.0.1 the loopback interface then that probably shows an overloaded machine, or a badly configuired client on your local machine. If from elsewhere, then probably either either the above or a network problem.
You really need to be very explicit in what versions of everything you are using, which distro or handbuilt because unfortunately all our mind-readers left the forum last week.
Sorry but Elastix doesn’t use a legitimate FreePBX, it forked up FreePBX 2.8 a couple of years ago, and apparently has all sorts of other stuff such as vtigercrm, im, who knows perhaps addons, that will presumably be connecting to port 5038 also.
Again, sorry, but I think you will need to go to them for help with what they call FreePBX.