Domain Alias Not Working

Provider: Self-Hosted

Virtualization Type: Dedicated server

System: Centos 7.5

Installation option: defaults

OLS or Enterprise?
OLS

Installing from the official server or mirror server?
official

Install Memcached extension for PHP?
yes

Install LiteSpeed Memcached?
yes

Install Memcached?
yes

Install Redis extension for PHP?
yes

Install Redis?
yes

Problem:

When I try to add a domain alias, it doesn’t work.

When I open the alias domain, the server returns a 404 ERROR page.