Certbot renew not working when testing

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18

Thanks, I modified the conf file by adding this line just before the server line:

webroot-path = /var/www/svn.boberglund.com/public_html

Then I ran the renew test command again with the same result:

$ sudo certbot renew --dry-run
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/svn.boberglund.com.conf
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Cert not due for renewal, but simulating renewal for dry run
Plugins selected: Authenticator webroot, Installer None
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for svn.boberglund.com
Cleaning up challenges
Attempting to renew cert (svn.boberglund.com) from /etc/letsencrypt/renewal/svn.boberglund.com.conf produced an unexpected error: Missing command line flag or config entry for this setting:
Input the webroot for svn.boberglund.com:. Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/svn.boberglund.com/fullchain.pem (failure)

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** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates below have not been saved.)

All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/svn.boberglund.com/fullchain.pem (failure)
** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates above have not been saved.)
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1 renew failure(s), 0 parse failure(s)

And it does not matter if I put webroot-path into the top section of the conf file before the section name [renewalparams], same error on the test.

If I use my browser to access the svn webroot it does produce a page rendering of my index.html, so the webroot is in fact accessible via port 80.

So maybe the Ubuntu 18 LTS distro is giving me a too old certbot. (Must be happening for many others as well.)
Is there a way to update certbot past the version from Ubuntu?