[Solved] Authorization for the domain failed

[NoSGR]

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My domain is: www.webeasy.eu

I ran this command: I’ve tried to enable Let’s Encrypt through Plesk’s Webadmin

It produced this output: Error: Could not issue a Let’s Encrypt SSL/TLS certificate for webeasy.eu. Authorization for the domain failed.

Additional error details:
Invalid response from https://acme-v01.api.letsencrypt.org/acme/authz/H-B0Tz9OcMkMpso61k-ixveRlCtjS4hhCHf-dYr8OVk.
Details:
Type: urn:acme:error:connection
Status: 400
Detail: Fetching http://www.webeasy.eu/.well-known/acme-challenge/b_KVCYuzzjG2lKOx_tiY3ne6baDwp4bFLYmRgKAG19Y: Error getting validation data

My web server is (include version): Apache 2.4.6

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is: Plesk Onyx 17.5.3

I can login to a root shell on my machine (yes or no, or I don’t know): Yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): Plesk Onyx 17.5.3

Also i’d like to tell you that i’ve already used Let’s Encrypt on another domain on the same server (www.graphtype.com) without any problem.

[NoSGR]

I’ve managed to solve this.

It was a DNS Setup Issue.

Actually my Registar’s NameServers and DNS Settings’ NS entries weren’t the same.

I’ve changed them and now the Certificate issued normally.