cURL error 60: SSL certificate problem

Windows IIS 10 Getting the following when I select a run action in rss to post [11-Dec-2019 22:23:46 UTC] Error in parsing RSS feed (custom method): cURL error 60: SSL certificate problem: unable to get local issuer certificate for https://atlantasroyalphotography.smugmug.com/hack/feed.mg?Type=nickname&Data=atlantasroyalphotography&format=atom10!