Solved issue with locales' (#4419)

app/assets/config/manifest.js

 //= link_tree ../images
 //= link_tree ../builds
+//= link_tree ../locales

app/controllers/api/v1/locales_controller.rb

@@ -30,7 +30,7 @@ module Api
       def show
         language = params[:name].tr('-', '_')
 
-        render file: Rails.root.join('app', 'assets', 'locales', "#{language}.json")
+        redirect_to ActionController::Base.helpers.asset_path("#{language}.json")
       rescue StandardError
         head :not_acceptable
       end

config/initializers/assets.rb

@@ -8,6 +8,7 @@ Rails.application.config.assets.version = '1.0'
 # Add additional assets to the asset load path.
 # Rails.application.config.assets.paths << Emoji.images_path
 Rails.application.config.assets.paths << Rails.root.join('node_modules/bootstrap-icons/font')
+Rails.application.config.assets.paths << Rails.root.join('app/assets/locales')
 
 # Precompile additional assets.
 # application.jsx, application.css, and all non-JS/CSS in the app/assets