bug fix

main.py

@@ -232,7 +232,9 @@ async def stream_notion_response(notion_request_body: NotionRequestBody):
 
     try:
         async with httpx.AsyncClient(timeout=None) as client: # No timeout for streaming
-            async with client.stream("POST", NOTION_API_URL, json=notion_request_body.dict(), headers=headers) as response:
+            # Explicitly serialize using .json() to respect Pydantic Config (like json_encoders for UUID)
+            request_body_json = notion_request_body.json()
+            async with client.stream("POST", NOTION_API_URL, content=request_body_json, headers=headers) as response:
                 if response.status_code != 200:
                     error_content = await response.aread()
                     print(f"Error from Notion API: {response.status_code}")