FIX: restore the engine.rb file.

FIX: restore the engine.rb file.

diff --git a/lib/discourse_akismet/engine.rb b/lib/discourse_akismet/engine.rb
new file mode 100644
index 0000000..8475339
--- /dev/null
+++ b/lib/discourse_akismet/engine.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module DiscourseAkismet
+  class Engine < ::Rails::Engine
+    isolate_namespace DiscourseAkismet
+  end
+end
diff --git a/lib/tasks/reviewables.rake b/lib/tasks/reviewables.rake
index bbc3647..125694b 100644
--- a/lib/tasks/reviewables.rake
+++ b/lib/tasks/reviewables.rake
@@ -2,8 +2,6 @@
 
 desc 'Migrate akismet reviews to the new Reviewable API'
 task 'reviewables:migrate_akismet_reviews' => :environment do
-  reporter = Discourse.system_user
-
   migrate_reviewables
   migrate_scores
   migrate_creation_history
diff --git a/plugin.rb b/plugin.rb
index 410944d..e43b3d0 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -8,6 +8,7 @@
 
 enabled_site_setting :akismet_enabled
 
+load File.expand_path('../lib/discourse_akismet/engine.rb', __FILE__)
 load File.expand_path('../lib/discourse_akismet.rb', __FILE__)
 load File.expand_path('../lib/discourse_akismet/users_bouncer.rb', __FILE__)
 load File.expand_path('../lib/akismet.rb', __FILE__)

GitHub sha: 886c1e76