I know nothing of OLA and DMX so will be of limited help.
But the error indicates the binding can’t communicate with the olad daemon. So this is either a problem where the daemon isn’t running, isn’t running on the server with the IP address ending in 137, isn’t running on port 9010, or network trains is being blocked by a firewall.
- check the daemon is running
- check the machine’s address hasn’t changed
- check that you can ping that address from the OH server
- check if you can telnet to that ip:port to see if the port is open and reachable
If you can do all of the above you will need help from an expert. On the dmx binding.
If one it more of the above fails you need to solve the networking or software problem that exists outside of OH.