Failed authorization procedure - 404 Not Found

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1

Hello,
when I run

certbot-auto  certonly --manual

I get error

FailedChallenges: Failed authorization procedure. mama.mankiewicz.cz (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://mama.mankiewicz.cz/.well-known/acme-challenge/dXrDB2p9vdnRoQ6MbW-FU5FlP4tJ9ew3eQnOJ4iofgA: "<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>

The link http://mama.mankiewicz.cz/.well-known/acme-challenge/dXrDB2p9vdnRoQ6MbW-FU5FlP4tJ9ew3eQnOJ4iofgA is working from any browser…

2

I just fixed it, IPv6 …

3

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