Orign error

TL;DR

Developers are asking for an explanation of an error regarding adding a domain as a Web Platform in a project. They need to set environmental variables like `_APP_CONSOLE_WHITELIST_ROOT`, `_APP_CONSOLE_WHITELIST_EMAILS`, `_APP_CONSOLE_WHITELIST_IPS`. To block creating new users by signup, they should customize the user management system.

And how I can block creating new users by signup and then only I can view users and create one?