Issue cURL error 28 - Help me!

[bangon2006]

Detailed error: URL error 28: Operation timed out after 5000 milliseconds with 0 out of -1 bytes received (http_request_failed)

My Wordpress website reported such error. Please let me ask what the error is and how to fix it?
Thank you very much

 

[IgorG]

Please check this KB article Wordpress Update or its plugin/theme installation fails: cURL error 28: Resolving timed out after 3512 millisecond