debug

app.py

@@ -105,7 +105,7 @@ def answer(question: str, user_id="demo", history="None"):
     try:
         if not question.strip():
             return "Please ask a question."
-        if history and not kb[user_id]["texts"]:
+        if history != "None" and not kb[user_id]["texts"]:
             return "No reference passage yet. Add one first."
 
         context = ""
@@ -120,6 +120,8 @@ def answer(question: str, user_id="demo", history="None"):
         elif history == "All":
             store  = kb[user_id]
             context = "\n".join(store["texts"])
+        
+        print(f"history: {history}\ncontext: {context}")
 
         # 2.  Build a Qwen-chat prompt (helper defined earlier)
         prompt = build_qwen_prompt(context, question)