fix(jungfraujoch-preview): fix error handling for jungfraujoch preview client.

csaxs_bec/devices/jungfraujoch/jungfraujoch_preview.py

@@ -213,7 +213,12 @@ class JungfrauJochPreview:
             # pylint: disable=no-member
             r = self._socket.recv_multipart(flags=zmq.NOBLOCK)
             self._parse_data(r)
-
+        except zmq.error.Again:
+            # No message received, this is expected when the receive queue is empty
+            pass
+        except Exception as e:
+            # Consider moving this to debug level, but it can be useful to see why preview updates are not working
+            logger.info(f"Error while receiving ZMQ message from JFJ preview at {self.url}: {e}")
         finally:
             # Unsubscribe from the topic
             self._socket.setsockopt(zmq.UNSUBSCRIBE, ZMQ_TOPIC_FILTER)