AdGuard Home 启用加密提示：Error: control/tls/validate | port 443 is not available, cannot enable HTTPS on it | 400 解决方法

This is a common issue when trying to enable the HTTPS feature of AdGuard Home. The most likely cause is that the port 443 is already in use by another application or service. To fix the problem, you can either disable the other application or service, or you can configure AdGuard Home to use a different port for the HTTPS feature.