nginx-proxy-manager: Internal error while getting Lets Encrypt certificate / SQlite database

When trying to get a new certificate from Let’s Encrypt, I get an “Internal Error” message. Using latest docker image (2.4.0).

By looking at the /var/log/letsencrypt/letsencrypt.log file, I can see that the challenges has been successfully completed :

2020-08-26 21:54:18,911:DEBUG:certbot._internal.storage:Creating directory /etc/letsencrypt/archive.
2020-08-26 21:54:18,912:DEBUG:certbot._internal.storage:Creating directory /etc/letsencrypt/live.
2020-08-26 21:54:18,912:DEBUG:certbot._internal.storage:Writing README to /etc/letsencrypt/live/README.
2020-08-26 21:54:18,913:DEBUG:certbot._internal.storage:Archive directory /etc/letsencrypt/archive/npm-2 and live directory /etc/letsencrypt/live/npm-2 created.
2020-08-26 21:54:18,913:DEBUG:certbot._internal.storage:Writing certificate to /etc/letsencrypt/live/npm-2/cert.pem.
2020-08-26 21:54:18,914:DEBUG:certbot._internal.storage:Writing private key to /etc/letsencrypt/live/npm-2/privkey.pem.
2020-08-26 21:54:18,914:DEBUG:certbot._internal.storage:Writing chain to /etc/letsencrypt/live/npm-2/chain.pem.
2020-08-26 21:54:18,914:DEBUG:certbot._internal.storage:Writing full chain to /etc/letsencrypt/live/npm-2/fullchain.pem.
2020-08-26 21:54:18,914:DEBUG:certbot._internal.storage:Writing README to /etc/letsencrypt/live/npm-2/README.
2020-08-26 21:54:19,032:DEBUG:certbot._internal.plugins.selection:Requested authenticator webroot and installer <certbot._internal.cli.cli_utils._Default object at 0x7fc1461d4190>
2020-08-26 21:54:19,033:DEBUG:certbot._internal.cli:Var pref_challs=dns,http (set by user).
2020-08-26 21:54:19,033:DEBUG:certbot._internal.cli:Var authenticator=webroot (set by user).
2020-08-26 21:54:19,033:DEBUG:certbot._internal.cli:Var webroot_path=/data/letsencrypt-acme-challenge (set by user).
2020-08-26 21:54:19,034:DEBUG:certbot._internal.cli:Var webroot_path=/data/letsencrypt-acme-challenge (set by user).
2020-08-26 21:54:19,034:DEBUG:certbot._internal.cli:Var webroot_map={'webroot_path'} (set by user).
2020-08-26 21:54:19,034:DEBUG:certbot._internal.storage:Writing new config /etc/letsencrypt/renewal/npm-2.conf.
2020-08-26 21:54:19,079:DEBUG:certbot._internal.reporter:Reporting to user: Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/npm-2/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/npm-2/privkey.pem
Your cert will expire on 2020-11-24. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run "certbot renew"

The certificate is then displayed on the certificates list as expired with an expiration date being the current day.

By looking at the certificate file on /etc/letsencrypt/live/…, I can see the certificate being valid :

[root@docker-nginx:/etc/letsencrypt/live/npm-2]# openssl x509 -in cert.pem -text Certificate: Data: Version: 3 (0x2) Serial Number: <removed> Signature Algorithm: sha256WithRSAEncryption Issuer: C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3 Validity Not Before: Aug 26 20:54:16 2020 GMT Not After : Nov 24 20:54:16 2020 GMT