Update app.py

app.py

@@ -28,7 +28,7 @@ def on_query():
 def handle_userinput(user_question):
     res = st.session_state.model({'query': user_question})
     answer, docs = res["result"], res["source_documents"]
-    source = sources_ref[basename(docs[0].metadata["source"])]
+    # source = sources_ref[basename(docs[0].metadata["source"])]
 
     st.session_state.chat_history.insert(0, user_question)
     # st.session_state.chat_history.insert(1, answer + "<br><br><em>Source: " + source)