Adding a site to existing production instance does not start the setup process for the new site

I have an existing production instance and it is working.

I added a new site to this instance.

After adding new site and installing necessary apps like ERPNext, HRMS, etc. when I logged in to the new site the setup process did not run. I was just logged in and take directly to Desk Page.

What must be the issue and how to force it to run the setup of ERPNext?