I have dozens of websites on the same server, they are pretty much clones of eachother and they all started to display this error on GTmetrix:
### The certificate is not trusted in all web browsers. You may need to install an Intermediate/chain certificate to link it to a trusted root certificate. [Learn more about this error](https://www.sslshopper.com/ssl-certificate-not-trusted-error.html). The fastest way to fix this problem is to contact your SSL provider.
I found other threads about it but couldn’t understand how to fix the problem based on them.
My domain is: www.reciclandobh.org
It produced this output:
IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/www.reciclandobh.org/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/www.reciclandobh.org/privkey.pem Your cert will expire on 2019-02-14. 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" - If you like Certbot, please consider supporting our work by: Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate Donating to EFF: https://eff.org/donate-le
The operating system my web server runs on is (include version): Ubuntu 14.04.5
My hosting provider, if applicable, is: Amazon
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no