fix: add await to to_thread call (#3558)

* refactor(tracing/service.py): change asyncio.create_task to self.logs_queue.put_nowait for better performance and readability

* fix(chat.py): remove unnecessary logging of exception in build_flow function to improve code readability and maintainability

* refactor(tracing/service.py): refactor _end_and_reset method to use asyncio.create_task for better performance and readability

src/backend/base/langflow/api/v1/chat.py

@@ -329,8 +329,7 @@ async def build_flow(
         build_task = asyncio.create_task(await asyncio.to_thread(_build_vertex, vertex_id, graph))
         try:
             await build_task
-        except asyncio.CancelledError as exc:
-            logger.exception(exc)
+        except asyncio.CancelledError:
             build_task.cancel()
             return
 

src/backend/base/langflow/services/tracing/service.py

@@ -211,7 +211,7 @@ class TracingService(Service):
             self._end_traces(trace_id, trace_name, e)
             raise e
         finally:
-            asyncio.create_task(asyncio.to_thread(self._end_and_reset, trace_id, trace_name, None))
+            asyncio.create_task(await asyncio.to_thread(self._end_and_reset, trace_id, trace_name, None))
 
     async def _end_and_reset(self, trace_id: str, trace_name: str, error: Exception | None = None):
         self._end_traces(trace_id, trace_name, error)