Lets Encrypt errors aren't gracefully handled

[turt2live]

### Requesting Let's Encrypt certificate for demo.travisr-test.com ...
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Requesting a certificate for demo.travisr-test.com and 6 more domains
An unexpected error occurred:
Service busy; retry later.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
cp: can't stat '/etc/letsencrypt/live/demo.travisr-test.com/*.pem': No such file or directory

.env and SSL configured; you can now docker compose up