Update app.py

app.py

@@ -72,8 +72,8 @@ with tab2:
         question = st.text_input(label="Enter your question", value=sample_question)
 
         # perform question answering when "get answer" button clicked
-        button = st.button("Get answer")
-        if button:
+        button2 = st.button("Get answer")
+        if button2:
             with st.spinner(text="Loading question model..."):
                 question_answerer = question_model()
             with st.spinner(text="Getting answer..."):