before send to remote

env/lib/python3.8/site-packages/django/contrib/sitemaps/templates/sitemap.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
+{% spaceless %}
+{% for url in urlset %}
+  <url>
+    <loc>{{ url.location }}</loc>
+    {% if url.lastmod %}<lastmod>{{ url.lastmod|date:"Y-m-d" }}</lastmod>{% endif %}
+    {% if url.changefreq %}<changefreq>{{ url.changefreq }}</changefreq>{% endif %}
+    {% if url.priority %}<priority>{{ url.priority }}</priority>{% endif %}
+    {% for alternate in url.alternates %}
+    <xhtml:link rel="alternate" hreflang="{{ alternate.lang_code }}" href="{{ alternate.location }}"/>
+    {% endfor %}
+  </url>
+{% endfor %}
+{% endspaceless %}
+</urlset>

env/lib/python3.8/site-packages/django/contrib/sitemaps/templates/sitemap_index.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+{% spaceless %}
+{% for site in sitemaps %}
+  <sitemap>
+    <loc>{{ site.location }}</loc>
+      {% if site.last_mod %}
+        <lastmod>{{ site.last_mod|date:"c" }}</lastmod>
+      {% endif %}
+  </sitemap>
+{% endfor %}
+{% endspaceless %}
+</sitemapindex>