Update app.py

app.py

@@ -49,7 +49,7 @@ def fetch_sitemap_urls_from_xml(sitemap_url, domain, recursive=False):
     try:
         response = requests.get(sitemap_url, headers={"User-Agent": "SiteFocusTool/1.0"}, timeout=10)
         response.raise_for_status()
-        soup = BeautifulSoup(response.content, "xml")
+        soup = BeautifulSoup(response.content, "lxml-xml")  # Use lxml parser
         if soup.find_all("sitemap"):
             for sitemap in soup.find_all("sitemap"):
                 loc = sitemap.find("loc").text