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When I try to access my RSS Feed I am getting this error:
error on line 1 at column 35: Unsupported encoding UTF-5
It was working fine just a couple days ago and I'm not sure what I changed if anything to break it.
I don't know that this has anything to do with WordPress, but I'm pretty sure it should be UTF-8, not UTF-5. The first line of your RSS feed reads <?xml version="1.0" encoding="UTF-5"?>.
<?xml version="1.0" encoding="UTF-5"?>
Edit: Try checking your Reading Settings for the Encoding for pages and feeds entry.
Encoding for pages and feeds
Required, but never shown