Hi,

You may want to eject _html_head.html.erb via rails g active_admin:views

Ref: https://github.com/activeadmin/activeadmin/blob/master/UPGRADING.md#from-v3-to-v4-beta

Please also take the following into consideration:

Note that the templates can and will change across releases. There are additional partials that can be copied but they are considered private so you do so at your own risk. You will have to keep those up to date per release.