Custom redirect url incorrect

Hello,

My site is installed in a subdirectory https://site.com/prod/
When the user logs in, the are automatically redirected to https://site.com/prod/front as a landing page.

So when I set the redirect to front, it takes the user to the user login page. but when the user logs in, the url is broken and looks like this: https://site.com/prod//prod/front.