Update app.py

app.py

@@ -9,7 +9,10 @@ client = OpenAI(
     base_url="https://api.runpod.ai/v2/vllm-k0g4c60zor9xuu/openai/v1",
 )
 
-def predict(message, history=[]):
+def predict(message, history=None):
+    # Ensure history is initialized as an empty list if it's None
+    if history is None:
+        history = []
     # Append the system role at the start if history is empty
     if not history:
         history.append(("system", "You are a history assistant, that provides the best possible answers to any historical questions asked about American History. Be helpful and specific, providing any detailed nuance needed to have a full understanding of the question."))