I don’t understand – Certbot was already installed, probably using your OS’s package manager.
Why did you want to install it twice?
If you can, please don’t run it at exactly 06:00:00 and 23:00:00.
You can use something like this to run it at completely random times:
0 */12 * * * perl -e 'sleep int(rand(43200))' && sh /etc/letsencrypt/certbot-auto renew
There may already be another cron job or systemd timer set up by your other Certbot installation.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My web server is (include version):
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is:
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you’re using Certbot):