Fix ConnectionAbortedError

✅ Solution

ConnectionAbortedError in Ray often signals a premature termination of a network connection, usually due to firewall restrictions, network instability, or an incompatible gRPC version. Ensure your firewall allows communication between Ray nodes, your network connection is stable, and that you're using compatible gRPC versions across all nodes; downgrading or upgrading gRPC (grpcio) to a known stable version can often resolve this. If using a remote head, verify the head's working directory is a valid URI.