don't let hf rate limits fail the app

app.py

@@ -522,7 +522,10 @@ async def respond(
                 "langsmith_url": langsmith_url,
             },
         )
-        gradio_flagger.flag(flag_data=data_to_flag, username=request.username)
+        try:
+            gradio_flagger.flag(flag_data=data_to_flag, username=request.username)
+        except Exception as exc:
+            LOG.error(f"Error on flagging {data_to_flag}: {exc}")
         (flagged_data,) = data_to_flag
         metadata_to_gsheet = flagged_data.get("metadata").values()
         gsheet_row = [[timestamp_string, *metadata_to_gsheet, langsmith_url]]