fix bugs

app/facebook.py

@@ -78,6 +78,7 @@ class FacebookClient:
         """
         try:
             entry = body["entry"][0]
+            logger.info(f"[DEBUG] entry: {entry}")
             messaging = entry["messaging"][0]
             
             sender_id = messaging["sender"]["id"]

app/main.py

@@ -144,7 +144,10 @@ async def process_message(message_data: Dict[str, Any]):
 
     # Get page access token (sync)
     page_token = supabase_client.get_page_token(page_id)
-    logger.info(f"[DEBUG] page_token: {page_token[:10]} ... {page_token[-10:]}")
+    if page_token:
+        logger.info(f"[DEBUG] page_token: {page_token[:10]} ... {page_token[-10:]}")
+    else:
+        logger.info(f"[DEBUG] page_token: None")
 
     # Nếu không có page_token, không xử lý
     if not page_token: