print traceback on topology collection error

exo/orchestration/standard_node.py

@@ -299,6 +299,7 @@ class StandardNode(Node):
         await self.collect_topology()
       except Exception as e:
         print(f"Error collecting topology: {e}")
+        traceback.print_exc()
 
   async def get_inference_result(self, request_id: str) -> Tuple[Optional[np.ndarray], bool]:
     if request_id not in self.buffered_token_output: