.

app.py

@@ -142,7 +142,7 @@ def answer(question: str, user_id="demo", history="None"):
 def clear_kb(user_id="demo"):
     if user_id in kb:
         kb[user_id]["texts"].clear()
-        kb[user_id]["vecs"] = torch.empty((0, 4096))
+        kb[user_id]["vecs"] = None
         return f"Cleared KB for user '{user_id}'."
     else:
         return f"User ID '{user_id}' not found."