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 domain is: Plearn.gg
I ran this command: Visited the page (Only ONE person has got this error)
It produced this output: https://i.gyazo.com/thumb/1200/102aef1f043c3248e76a92204473dccf-png.jpg
My web server is (include version): Ubuntu 18.04.5 LTS (GNU/Linux 5.3.0-1035-azure x86_64)
The operating system my web server runs on is (include version): Ubuntu 18.04.5 LTS (GNU/Linux 5.3.0-1035-azure x86_64)
My hosting provider, if applicable, is: AWS
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, Using CERTBOT for SSL
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you’re using Certbot): Certbot 1.7.0
Could you please help me debug this issue, I seem to get a fully working SSL for everyone except one person, he gets a ERR_CERT_COMMON_NAME_INVALID. Why is this, and what am I doing wrong?