How to Install cPanel & WHM Without Errors (AlmaLinux, CloudLinux, Ubuntu)
Start from a fresh, supported operating system (for example AlmaLinux 9), set a fully qualified hostname, update the system, then run the installer as root inside screen: cd /home && curl -o latest -L https://securedownloads.cpanel.net/latest && sh latest. When it finishes, open https://your-server-ip:2087 and complete the setup in WHM. Most install errors come from a server that is not fresh, a bad hostname, or too little disk space.