Help configuring let's encrypt manually

Hello I were running the following on on my ubuntu server

sudo letsencrypt --apache -d example.com -d www.example.com
example.com replaced for my own domain of course, how ever i accidently exited out the automated installer and ended up with the following message

Failed authorization procedure. example.com (tls-sni-01): urn:acme:error:tls :: The server experienced a TLS error during domain verification :: Failed to connect to 104.27.180.219:443 for TLS-SNI-01 challenge

IMPORTANT NOTES:

  • The following errors were reported by the server:

    Domain: example.com
    Type: tls
    Detail: Failed to connect to 104.27.180.219:443 for TLS-SNI-01
    challenge

    To fix these errors, please make sure that your domain name was
    entered correctly and the DNS A record(s) for that domain
    contain(s) the right IP address. Additionally, please check that
    you have an up-to-date TLS configuration that allows the server to
    communicate with the Let's Encrypt client.

How can i fix this now, where are the files and steps to configure this manually?

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