Adding Scope to ActiveAdmin routes getting ActionController::UrlGenerationError

Found the issue. Feel a bit silly about this, but I was using a forked repo of the original ActiveAdmin. When I switched over to use the latest from the original ActiveAdmin everything works exactly like I expected it to.

Just in case someone runs into the same issue, I was using https://github.com/dtaniwaki/active_admin, which hasnt' been updated in over 4 years.