Nginx error_page Question

I'm trying to modify the errorpage.conf to point to a dynamic link vs. the error pages in Centmin Mod.

Using 403 as an example.

I'm trying to send the error page to this link: https://10.0.0.123/403 I can easily do that with the code below:

Code:

error_page 403 = https://10.0.0.123/403;

The problem is that it shows up in the browser location bar as https://10.0.0.123/403 when I would like it not to show.

I tried what is below but it didn't work.

Code:

error_page 403 = https://10.0.0.123/403;

location = https://10.0.0.123/403 {
access_log              off;
internal;
}

If anyone has any ideas on how I can make this work, please let me know.

Thanks!