RSS feed suddenly “not well-formed” any more.

Hi all,

I’ve been banging my had against the wall for the last 24 hours, but this must be really stupid.

tl;dr: My RSS feed broke from one day to the other. the feed validator claims “not well-formed (invalid token)”. I thought I know XML, but I don’t quite understand what’s invalid.


My RSS feed worked for years flawlessly. Not sure when it stopped working, probably within the last 7 days. I did not install any new plugins, but of course I update the site regularly.

I used the w3c validator, here is the link to the validation results

The error occurs end the end of the <rss><channel><title> tag:

This feed does not validate.

    line 8, column 45: XML parsing error: <unknown>:8:179: not well-formed (invalid token) [help]

         > <channel><title>Systems Engineering Trends</title><link rel="preload" as= ...

… and here are the first 8 lines of XML, leading to the issue:

<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"

	<title>Systems Engineering Trends</title>

Am I crazy, or doesn’t this look totally valid?

Thanks for your help!

– Michael

  • This topic was modified 3 days, 11 hours ago by jastram.

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