XML Sitemap: An unknown error has occurred (805303f4)

[klonos]

This seems to be a known error with the module, and a few tickets have been filed for it over the past years:

https://www.drupal.org/project/xmlsitemap/issues/2650674
https://www.drupal.org/project/xmlsitemap/issues/2227409
https://www.drupal.org/project/xmlsitemap/issues/1276232
​
It looks like a fix has been included in the latest version of the module, so we should update to it: https://www.drupal.org/project/xmlsitemap/issues/2244449