Replaced plain argument of manage.py (refs #24125).

set_app_domain.py

@@ -217,7 +217,7 @@ class SetAppDomain():
             log('Assuming that the new url is using HTTPS: "%s"' % new_url)
             cmds = [
                 # set site url in site settings
-                'echo \'from skyreach_site.base.models import SiteSettings; ss = SiteSettings.get_singleton(); ss.url = "%s"; ss.save(); print("Site settings saved.")\' | su skyreach -c "python3 /home/skyreach/htdocs/skyreach_site/manage.py shell --plain --no-startup"' % new_url,
+                'echo \'from skyreach_site.base.models import SiteSettings; ss = SiteSettings.get_singleton(); ss.url = "%s"; ss.save(); print("Site settings saved.")\' | su skyreach -c "python3 /home/skyreach/htdocs/skyreach_site/manage.py shell -i python"' % new_url,
             ]
             utils.run_commands(cmds)
         except Exception as e: