I'm trying to get a SSL certificate. When I tried the sudo certbot certonly --standalone -d example.com
command it will give the following error.
http-01 challenge for "example.com"
Waiting for verification...
Challenge failed for domain ""
http-01 challenge for "example.com"
Cleaning up challenges
Some challenges have failed.
IMPORTANT NOTES:
- The following errors were reported by the server:
Domain: example.com
Type: unauthorized
Detail: 5.223.81.7: Invalid response from
https://example.com/.well-known/acme-challenge/TKQORWrjpM1hyx81XCC3DpzFYI_UDnWdr3U:
404
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address.
When I looked at the logs at /var/log/letsencrypt/letsencrypt.log
. it gives the following log
File "/usr/lib/python2.7/site-packages/certbot/_internal/client.py", line 374, in obtain_certificate
orderr = self._get_order_and_authorizations(csr.data, self.config.allow_subset_of_names)
File "/usr/lib/python2.7/site-packages/certbot/_internal/client.py", line 421, in _get_order_and_authorizations
authzr = self.auth_handler.handle_authorizations(orderr, best_effort)
File "/usr/lib/python2.7/site-packages/certbot/_internal/auth_handler.py", line 91, in handle_authorizations
self._poll_authorizations(authzrs, max_retries, best_effort)
File "/usr/lib/python2.7/site-packages/certbot/_internal/auth_handler.py", line 180, in _poll_authorizations
raise errors.AuthorizationError('Some challenges have failed.')
how could I get an SSL certificate with cerbot certonly?