Update app.py

app.py

@@ -65,8 +65,8 @@ for idx, sitemap_url in enumerate(sitemap_urls):
 
         except Exception as e:
             st.write(f"An error occurred for {sitemap_url}:", str(e))
+else:
+    st.write("Please enter at least one sitemap URL to analyze.")
 st.sidebar.markdown("Credits")
 st.sidebar.markdown("[semrush.com/blog/content-analysis-xml-sitemaps-python](https://www.semrush.com/blog/content-analysis-xml-sitemaps-python/)")
 st.sidebar.markdown("[Using XML Sitemaps for Content Analysis with Python](https://github.com/eliasdabbas/semrush_tutorial_sitemap_analysis/)")
-else:
-    st.write("Please enter at least one sitemap URL to analyze.")