Error on installing a certificate for domain with Plesk Onyx Plugin
I am accidentily deleted the certificate for a domain in Plesk Onyx on Ubuntu 14.04 LTS Server.
Trying to reinstall a new certificate I receive an error which I have not yet seen in forums:
Fehler: Fehler bei der Installation des SSL-Zertifikats von Let's Encrypt: Could not obtain directory: Invalid response: <HTML><HEAD><TITLE>Error</TITLE></HEAD><BODY> An error occurred while processing your request.<p> Reference&#32;&#35;97&#46;5df01202&#46;1495194789&#46;2a65bc09 </BODY></HTML> . Status: 504.
I have been looking for a solution, but I have not been able to find anything related. Similar errors have been experienced but none has a similar response.
Could anybody help, please?
Thank you very much in advance.