Our Simple RSS Feed Reader stopped working and displays the message "Failed loading XML"

No changes have been made to the site in months
I updated the module to v3.9.0, issue was not resolved
Seperately, I can load the XML feed just fine. 
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Joomla v3.10.11
PHP v7.4.33

Any help is appreciated

I'm having the same issue today, we have 100+ sites using RSS Feed Reader and all of them using feeds not pulling from their own site ie, site.com/home is pulling feeds from site.com/news are not showing. Failed loading XML Error.
site.com/news is showing their feeds from RSS Feed reader because all the feeds come from that site.

We are on RSS Feed Reader v 3.9.0, for a while now.
PHP v7.4.3

We are still on Joomla 3.10 have not upgraded all sites to J4 yet.