Update app.py

app.py

@@ -76,7 +76,7 @@ def do_ask(question, button, openapi, dataset, length, do_marg, k, max_sources,
     #progress(0, "Building Index...")
     docs._build_texts_index()
     #progress(0.25, "Querying...")
-    for i, result in enumerate(docs.query_gen(question,
+    for i, result in enumerate(docs.query(question,
                                               length_prompt=f'use {length:d} words',
                                               marginal_relevance=do_marg,
                                               k=k, max_sources=max_sources)):