Certificate for gesis.mybinder.org is invalid

[rgaiacs]

From https://www.ssllabs.com/ssltest/analyze.html?d=gesis.mybinder.org

[rgaiacs]

sudo certbot certonly -d notebooks.gesis.org -d gesis.mybinder.org --nginx run successfuly.

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

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You have an existing certificate that contains a portion of the domains you
requested (ref: /etc/letsencrypt/renewal/gesis.mybinder.org.conf)

It contains these names: gesis.mybinder.org

You requested these names for the new certificate: notebooks.gesis.org,
gesis.mybinder.org.

Do you want to expand and replace this existing certificate with the new
certificate?
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(E)xpand/(C)ancel: E
Renewing an existing certificate for notebooks.gesis.org and gesis.mybinder.org

Successfully received certificate.
Certificate is saved at: /etc/letsencrypt/live/gesis.mybinder.org/fullchain.pem
Key is saved at:         /etc/letsencrypt/live/gesis.mybinder.org/privkey.pem
This certificate expires on 2023-12-27.
These files will be updated when the certificate renews.
Certbot has set up a scheduled task to automatically renew this certificate in the background.

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 * Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
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[rgaiacs]

@MridulS update the certificate didn't resolve the issue. Can you help by providing a suggestion of what could be?