fix racing issues when sending message

app/message_processor.py

@@ -5,6 +5,7 @@ from loguru import logger
 from .constants import SUMMARY_STATUS_MESSAGES, PROCESSING_STATUS_MESSAGES, FOUND_REGULATIONS_MESSAGES, BATCH_STATUS_MESSAGES
 from .utils import get_random_message
 from .facebook import FacebookClient
+from app.config import get_settings
 
 class MessageProcessor:
     def __init__(self, channel, sender_id):
@@ -12,7 +13,7 @@ class MessageProcessor:
         self.sender_id = sender_id
         # FacebookClient riêng cho từng conversation
         self.facebook = FacebookClient(
-            app_secret=channel.llm.gemini_client.limit_manager.get_settings().facebook_app_secret,
+            app_secret=get_settings().facebook_app_secret,
             page_id=channel.page_id,
             page_token=channel.get_page_token(),
             sender_id=sender_id