Log exception for better output

Author: GDYendell

src/fastcs/control_system.py

@@ -139,8 +139,8 @@ async def block_forever():
             await asyncio.gather(*coros)
         except asyncio.CancelledError:
             pass
-        except Exception as e:
-            raise RuntimeError("Unhandled exception in serve") from e
+        except Exception:
+            logger.exception("Unhandled exception in serve")
         finally:
             logger.info("Shutting down FastCS")
             self._stop_scan_tasks()