Ensure your computer is free of conflicting software. If you are configuring a gaming tool, for example, ensure other overlay software (like Discord Overlay or NVIDIA GeForce Experience) is not conflicting with the Thinhnam.net tool.
L'Institut Océanographique de Monaco, Fondation Albert 1er. Thinhnam.net Configuration
sudo apt install certbot python3-certbot-nginx # for Nginx # or sudo apt install certbot python3-certbot-apache # for Apache Ensure your computer is free of conflicting software