There are several ways to achieve this, e.g. via a custom lighttpd configuration as mentioned in Cannot access api.php Json from localhost or different server, or simply setting CORS_HOSTS for a Pi-hole Docker container.
There are several ways to achieve this, e.g. via a custom lighttpd configuration as mentioned in Cannot access api.php Json from localhost or different server, or simply setting CORS_HOSTS for a Pi-hole Docker container.