Update app.py

app.py

@@ -124,7 +124,7 @@ def stream_chat(message: str, history: list, model: str, temperature: float, max
                 'top_k': top_k,
                 'repeat_penalty': penalty,
                 'low_vram': True,
-                "keep_alive": 60s,
+                "keep_alive": "60s",
             },
         )