Update app.py

app.py

@@ -10,6 +10,7 @@ from urllib.error import HTTPError
 default_system = 'You are a helpful assistant.'
 
 YOUR_API_TOKEN = os.getenv('YOUR_API_TOKEN')
+print(YOUR_API_TOKEN)
 dashscope.api_key = YOUR_API_TOKEN
 
 History = List[Tuple[str, str]]