Update app.py

app.py

@@ -184,7 +184,9 @@ def get_assistant_response(message, history, max_tokens, temperature, top_p, qa_
     return history, {"qa_chain": qa_chain}
 
 
-
+HF_TOKEN = os.getenv("AMAbot", "") # use for publishing 
+if not HF_TOKEN:
+    raise ValueError("Missing HF_TOKEN environment variable!")
 # Global InferenceClient for plain chat (fallback)
 client = InferenceClient("deepseek-ai/DeepSeek-R1-Distill-Qwen-1.5B",
                         token=HF_TOKEN)