backend/lib/tasks/migrate_wiki.rake

@@ -50,7 +50,7 @@ namespace :wiki do
           rev = WikiRevision.create!(
               wiki_page:,
               base_revision_id:,
-              created_user_id:  Integer(version.author.name) rescue 2,
+              created_user_id:  (Integer(version.author.name) rescue 2),
               kind:             :content,
               redirect_page_id: nil,
               message:          nil,