How to regenerate SSL certificate

I followed this approach as my certificate is not renewd as well. Unfortunatelly, the server it not accessible after it. Any idea why it is not working now? I am attaching the screenshot.

docker exec -it openvidu_nginx_1 crontab -l

outputs

0 */12 * * * certbot renew --post-hook "nginx -s reload" >> /var/log/cron-letsencrypt.log

And this command

docker exec -it openvidu_nginx_1 certbot renew --post-hook "nginx -s reload"

outputs

Saving debug log to /var/log/letsencrypt/letsencrypt.log

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No renewals were attempted.
No hooks were run.
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