Update app.py

app.py

@@ -133,7 +133,7 @@ def main():
 
         # Display the data
         with st.expander("Preview"):
-            st.write(df.head())
+            st.write(complaints_df.head(3))
 
         # Plot the data
         user_input = st.text_input("Type your message here",placeholder="Ask me about complaints from eThekwini residents")