How to resolve Error:curl 60 while trying to import an RSS feed
You may sometimes encounter the following error while trying to import a feed:
A similar error message may be recorded in your site's debug log at RSS Aggregator > Tools > Logs.
The "cURL error 60" could be caused by an outdated certificate file within your WordPress installation.
The best solution would be to request your host to provide an up-to-date certificate file and replace the WordPress default certificate file.
The file has to be replaced at
wp-includes/certificates in your WordPress installation.