Fix OwnerDiedError

✅ Solution

OwnerDiedError typically means an actor or task driver (the object that created the actor/task) died unexpectedly, causing dependent remote objects to become inaccessible. To fix this, ensure the driver script that creates actors and submits tasks remains alive until all ray.get() calls have completed, or implement robust error handling with retries to recover from actor failures and resubmit tasks if needed. Address any underlying instability leading to driver process termination (e.g., out-of-memory errors).