Certbot stand-alone return error Timeout during connect (likely firewall problem)

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2

Please see:

I'm getting something different:

ANotWorking

ERROR

chat.campdi.vn has an A (IPv4) record (1.53.141.231) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.

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