Failing master - undefined method `username' for #<Group id:13 @group239>

Failures:

  1) User updates wiki page when wiki is not empty in a group namespace updates a page
     Failure/Error: "#{@user.username} #{action} page: #{title}"

     NoMethodError:
       undefined method `username' for #<Group id:13 @group239>
       Did you mean?  users
     # ./app/models/project_wiki.rb:187:in `default_message'
     # ./app/models/project_wiki.rb:181:in `commit_details'
     # ./app/models/project_wiki.rb:106:in `create_page'
     # ./app/models/wiki_page.rb:187:in `block in create'
     # ./app/models/wiki_page.rb:261:in `save'
     # ./app/models/wiki_page.rb:186:in `create'
     # ./spec/factories/wiki_pages.rb:24:in `block (3 levels) in <top (required)>'
     # ./spec/features/projects/wiki/user_updates_wiki_page_spec.rb:72:in `block (3 levels) in <top (required)>'

Finished in 20 minutes 15 seconds (files took 31.23 seconds to load)
1002 examples, 1 failure, 11 pending

Failed examples:

rspec ./spec/features/projects/wiki/user_updates_wiki_page_spec.rb:149 # User updates wiki page when wiki is not empty in a group namespace updates a page

/gitlab-org/gitlab-ce/-/jobs/32192889