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app.py

@@ -293,7 +293,10 @@ def ask_me(self, p, q, r ,  ll_index_name=None, ll_sign_in_member=None):
   if (ll_index_name is None):
     ll_engine = self._llama_query_engine
 
-  ll_sign_in_member = q
+  if(q is None):
+    ll_sign_in_member = 'Duc'
+  else:  
+    ll_sign_in_member = q
 
   px = f'My name is {ll_sign_in_member}, and I want answer to the following: {p}.'
   print("##### " + px)