RSS feed not working

[nichu42]

Hey,

Is the RSS feed working for you?
Since a few updates ago, my RSS reader reported problems with it. Now I wanted to investigate, but opening https://changedetection.cloudron.example/rss?tag=&token=xxxyyyzzz (link from CD home page), I get 500 Internal Server Error.

The log shows

Jun 22 12:53:23 ERROR:changedetectionio:Exception on /rss [GET]
Jun 22 12:53:23 Traceback (most recent call last):
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/flask/app.py", line 2073, in wsgi_app
Jun 22 12:53:23 response = self.full_dispatch_request()
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/flask/app.py", line 1519, in full_dispatch_request
Jun 22 12:53:23 rv = self.handle_user_exception(e)
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/flask_restful/__init__.py", line 298, in error_router
Jun 22 12:53:23 return original_handler(e)
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/flask/app.py", line 1517, in full_dispatch_request
Jun 22 12:53:23 rv = self.dispatch_request()
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/flask/app.py", line 1503, in dispatch_request
Jun 22 12:53:23 return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
Jun 22 12:53:23 File "/app/code/changedetection.io/changedetectionio/__init__.py", line 384, in rss
Jun 22 12:53:23 response = make_response(fg.rss_str())
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/feedgen/feed.py", line 398, in rss_str
Jun 22 12:53:23 feed, doc = self._create_rss(extensions=extensions)
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/feedgen/feed.py", line 374, in _create_rss
Jun 22 12:53:23 item = entry.rss_entry()
Jun 22 12:53:23 File "/app/code/changedetection.io/dependencies/feedgen/entry.py", line 225, in rss_entry
Jun 22 12:53:23 description.text = CDATA(self.__rss_content['content']) \
Jun 22 12:53:23 File "src/lxml/etree.pyx", line 3119, in lxml.etree.CDATA.__cinit__
Jun 22 12:53:23 ValueError: ']]>' not allowed inside CDATA
Jun 22 12:53:23 x.x.x.x,y.y.y.y - - [22/Jun/2023 10:53:23] "GET /rss?tag=&token=16ff2fxxxxxxxxxxxxxxxxxxxx5a04d1 HTTP/1.1" 500 468 0.016829

Is it just me or is it ChangeDetection or Cloudron?

[nebulon]

Not sure where the issue comes from, but I cannot reproduce this at least and the RSS feed works as expected.

[nichu42]

@nebulon Thanks for testing on your end! It suddenly stopped working for me, no idea why (I didn't change anything, only automatic updates).
I now switched to notification via ntfy. But depending on the number of update notifications, I might need to go back to RSS. I'll do a re-install first in that case.

[necrevistonnezr]

Working fine here..

[nebulon]

@nichu42 is it still an issue for you?

[nichu42]

Yes, I still get a 500 internal server error when opening the RSS feed.

[girish]

@nichu42 this happens on all RSS feeds or just a specific one? There is some CDATA parsing error in your logs , so I am suspecting maybe it's just a specific feed erroring? Maybe we should report this upstream (since this is a parsing error).

[nichu42]

@girish It's the main RSS feed that is accessible from the home page:

It links to
https://cd.cloudron.foo/rss?tag=&token=16ff2f5...a04d1
..and causes the 500 Internal Server Error when called.

Do I misunderstand the functionality?

I'm monitoring 4 sites at this time, so I can actually live with notifications via ntfy. But if you suspect an upstream problem, I'll be happy to open an issue there.

[girish]

@nichu42 The RSS feed works in our instance. When I click it, it downloads an rss file. But I can copy the link and put it in my ttrss and i can see updates.

I still think this is because there is some website you are checking which breaks the rss in changedetection.

[nichu42]

@girish Thank you! You were absolutely right. I deleted all entries from the watch list, and the RSS feed was working instantly.
I re-added one by one, expecting to find the culprit. However, it's still working after I set up all sites again. Very strange.