Update app.py

app.py

@@ -126,7 +126,7 @@ async def chat(query,history,sources,reports):
     answer_lst = []
     for question, context in zip(question_lst , context_retrieved_lst):
         answer = chain.invoke(messages)
-        answer_lst.append(answer.content)
+        answer_lst.append(answer)
     docs_html = []
     for i, d in enumerate(context_retrieved, 1):
         docs_html.append(make_html_source(d, i))