invalid feed request

Update. The feed is completely shot. But the comments feed is ok. I’m assuming a file overwrite will fix this but what file(s) are safe to overwrite (and in which directories) and where can I get the clean file(s)
If you want to see the problem for yourself please go to: https://fallacy-fantasy-fact.co.uk
This problem has been caused by installing various plugins for sharing posts to Web 2.0 sites, a pain in the bum but something I have to do!

If who ever sees this can email me on [email protected] I’d be grateful. If you help me get it sorted I’ll buy you a drink via paypal.

Mac.

Hello out there!!! Is there any point in posting to this forum? Does anyone out there actually know anthing about worpress problems? If not can someone at least point me at someone who does? Many thanks.

Mac
[Email address moderated]

1. Post are submitted to the forums at a rate of approx 1 every 15 seconds. At that rate, it sometimes takes a while to deal with them all.

2. I appreciate that you’re frustrated but losing your temper won’t help either – especially within a volunteer forum.

3. Asking people to email you with a solution isn’t a good idea. If you ask a question here, it’s assumed that you will check back to read any suggestions. Chances are that the only emails you’ll get will be from spammers or people who will offer to “fix the problem” for a price.

4. You have just 4 errors in your site feed at present – most probably from a bad plugin or poor theme. Try:

– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).

– switching to the default theme to rule out any theme-specific problems.