No valid IP address found

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I will go with option 2, " send all challenge requests to a specific location
this can be done with an alias statement in main config file (usually: /etc/apache2/apache2.conf ) ", rg305.

The command i ran was:

sudo certbot --apache

This is the full output:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
No names were found in your configuration files. Please enter in your domain
name(s) (comma and/or space separated)  (Enter 'c' to cancel): cloudruler.io
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for cloudruler.io
Enabled Apache rewrite module
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. cloudruler.io (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://cloudruler.io/.well-known/acme-challenge/DFufFcqja_UQuz9baAsAyEL3OTqgQoDltG2WSxZqSb0 [13.85.31.243]: "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\n<p"

IMPORTANT NOTES:
 - The following errors were reported by the server:

   Domain: cloudruler.io
   Type:   unauthorized
   Detail: Invalid response from
   http://cloudruler.io/.well-known/acme-challenge/DFufFcqja_UQuz9baAsAyEL3OTqgQoDltG2WSxZqSb0
   [13.85.31.243]: "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML
   2.0//EN\">\n<html><head>\n<title>404 Not
   Found</title>\n</head><body>\n<h1>Not Found</h1>\n<p"

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A/AAAA record(s) for that domain
   contain(s) the right IP address.
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