Update app.py

app.py

@@ -14,6 +14,8 @@ def get_answer(query,chain):
     response = chain.invoke(query)
     return response['result']
 
+chain = None
+
 st.title("MULTIMODAL DOC QA")
 uploaded_file = st.file_uploader("File upload",type="pdf")
 if uploaded_file is not None:
@@ -41,7 +43,7 @@ if user_input := st.chat_input("User Input"):
         st.markdown(user_input)
 
     with st.spinner("Generating Response..."):
-        response = get_answer(chain,user_input)
+        response = get_answer(user_input,chain)
         answer = response['result']
         st.markdown(answer)
         query_and_print_results(image_vdb,user_input)