Feed page no longer displays

hi,

I had several feeds which worked fine just a couple of weeks ago, but now they each go to an unlinked XML file.

After searching this site for answers, I tried the feed addresses from the wordpress feed page, but the same thing happens. Clicking on forum post feed addresses is the same too.

Has something changed with wordpress feeds?

Here are a couple of my feeds:

https://greenesrelease.com/feed
https://greenesrelease.com/feed/?post_type=portfolio

Any suggestions?

Regards,

Janet
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