debug

app.py

@@ -95,10 +95,13 @@ def build_qwen_prompt(context: str, user_question: str) -> str:
 # ---------- 4. Gradio playground ------------------------------------------
 def store_doc(doc_text: str, user_id="demo"):
     """UI callback: take the textbox content and shove it into the KB."""
-    n = add_docs(user_id, [doc_text])
-    if n == 0:
-        return "Nothing stored (empty input)."
-    return f"Stored — KB now has {len(kb[user_id]['texts'])} passage(s)."
+    try:
+        n = add_docs(user_id, [doc_text])
+        if n == 0:
+            return "Nothing stored (empty input)."
+        return f"Stored — KB now has {len(kb[user_id]['texts'])} passage(s)."
+    except Exception as e:
+        return f"Error during storing: {e}"
 
 def answer(question: str, user_id="demo", history="None"):
     """UI callback: retrieve, build prompt with Qwen tags, generate answer."""