Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
Requesting a certificate for tc-connect.geo-solutions.it
An unexpected error occurred:
There were too many requests of a given type :: Error creating new order :: too many currently pending authorizations: see Rate Limits - Let's Encrypt
Please see the logfiles in /var/log/letsencrypt for more details.
It looks like you were using Certbot - Generally this is an indication that Certbot encountered a lot of failures running. There's some advice on this particular rate limit on our rate limits page:
Once upon a time there was a project - now outdated - that would scan Certbot logs for abandoned pending authzs, called LE_FIND_PENDING_AUTHZ, which is still available on Github but hasn't been updated for ACMEv2. If you're feeling technical, it might be a blueprint for digging up data too.
I'm not really sure what else can help; hopefully someone else has an idea!