fix

app/controllers/application_controller/with_maintenance.rb

@@ -8,8 +8,7 @@ module ApplicationController::WithMaintenance
   protected
 
   def check_maintenance
-    if  ENV['MAINTENANCE'] && 
-        current_user&.role != 'server_admin'
+    if ENV['MAINTENANCE'] && (current_user&.role != 'server_admin')
       redirect_to '/maintenance' 
     end
   end