I found one!
opml fetch feed https://wolfmd.me/feed.xml (formatted as https://wolfmd.me) opml err fetching? <nil> 2023/07/17 16:40:36 absify's parse subpath (parse "https://wolfmd.me/blog/setting-up-sdrtrunk-and-icecast-because\n -boredom\n .html": net/url: invalid control character in URL)</nil>