Cron troubleshooting

I got this message when I tested the Cron.
” While trying to spawn a call to the WP-Cron system, the following error occurred:
cURL error 28: Connection timed out after 3001 milliseconds

This is indicates a problem with your server’s permissions, resources, or general WordPress setup. If you need support, please contact your website host or post to the main WordPress support forum.”

Are there any guides for troubleshooting?

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