Okay, changed that:
mh@server:/var/www/html$ sudo certbot certonly --webroot -w /var/www/html -d m-it.care -v --debug-challenges
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Requesting a certificate for m-it.care
Performing the following challenges:
http-01 challenge for m-it.care
Using the webroot path /var/www/html for all unmatched domains.
Challenges loaded. Press continue to submit to CA. Pass "-v" for more info about
challenges.
Press Enter to Continue