Update app.py

app.py

@@ -135,6 +135,8 @@ openAI_key = st.sidebar.text_input('Enter your OpenAI API key here')
 url = st.text_input('Enter PDF URL here')
 question = st.text_input('Enter your question here')
 
+answer = ''
+
 if st.button('Submit'):
     if openAI_key.strip()=='':
         st.error('Please enter you Open AI Key. Get your key here : https://platform.openai.com/account/api-keys')
@@ -148,5 +150,6 @@ if st.button('Submit'):
         load_recommender('corpus.pdf')
 
         answer = generate_answer(question,openAI_key)
-        st.text_area('The answer to your question is :', value=answer, height=200)
+
+st.text_area('The answer to your question is :', value=answer, height=200)