I had some struggle to get certbot and nginx webroot plugin to play nice with my setups.

After some roaming of forums and stackexchange I found a solution that suits my nginx configuration and certbot.

I modified the info from this source:
https://community.letsencrypt.org/t/how-to-nginx-configuration-to-enable-acme-challenge-support-on-all-http-virtual-hosts/5622

So I just place it here and perhaps someone can be helped by this.

To the magic. Erhmm config..

sudo mkdir -p /var/www/common/letsencrypt/.well-known/acme-challenge/
sudo vim /etc/nginx/snippets/letsencrypt-acme-challenge.conf

And then in the ssl enabled vhosts you insert this.

After everything worked with a nginx reload, try to get the new cert.
sudo letsencrypt certonly -a webroot --webroot-path=/var/www/letsencrypt -d example.com

And at last do not forget your well earned Coffee.