Hi,
a few days ago my website RSS feed started to generate errors. When checking there:
https://validator.w3.org/feed/
the feed, which is:
http://www.superkierowca.pl/feed
the W3C validator says that RSS feed is invalid and shows a list of errors. As long as MailChimp uses the same validator, these errors make my website’s RSS feed useless.
In the meantime i did not change anything to the website. The only one change for sure was that a WordPress updated itself which may cause the issue.
Any clues on that?
Best,
Mike
