Error getting a certificate on a subdomain on a separate server

[Sebbie]

after giving the command < certbot --apache > on a newly installed Debian 8.0 server I get the following error:

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1: impera.datacloud4u.nl

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Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
Obtaining a new certificate
Performing the following challenges:
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.

What is going wrong?

[jared.m]

Please check the pinned post, this problem is due to an ongoing security issue discovered that affects the tls-sni-01 challenge used by the Apache plugin. For now, you will need to use an alternate challenge type, such as webroot with the http-01 authentication, instead.