SassC::SyntaxError in ActiveAdmin::Devise::Sessions#new

I am using arctic_admin gem . Following https://github.com/cprodhomme/arctic_admin I have added in the gem file

 gem 'arctic_admin'

in /app/assets/javascripts/active_admin.js file

//= require arctic_admin/base

in /app/assets/stylesheets/active_admin.scss file

@import "arctic_admin/base";

in active_admin.rb

 meta_tags_options = { viewport: 'width=device-width, initial-scale=1' }
    config.meta_tags = meta_tags_options
    config.meta_tags_for_logged_out_pages = meta_tags_options

in local theme is working. but in development environment I get

SassC::SyntaxError in ActiveAdmin::Devise::Sessions#new
Showing /usr/local/bundle/gems/activeadmin-2.12.0/app/views/layouts/active_admin_logged_out.html.erb where line #12 raised:

Error: File to import not found or unreadable: arctic_admin/base.
        on line 1:1 of app/assets/stylesheets/active_admin.scss
>> @import "arctic_admin/base";

Can someone please help me with this?

The issue occurred because the gem was added under the :development, :test group in the Gemfile. Following the comment under the post, I have moved it outside of these groups. The issue is now resolved.