Sitemap “Couldn’t fetch” in Google Search Console

I’ve submitted a sitemap to my website and Google Search Console status is “Couldn’t fetch”. I’ve had my xml verified by XML Validation, and my xml is also publicly available to be viewed: https://simplyharmonica.com/sitemap.xml. Google’s support website suggested troubleshooting “Couldn’t find status” with the url inspection tool. I wasn’t able to find anything useful from that asides that https://simplyharmonica.com/sitemap.xml hasn’t been crawled.

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