Fix for Lint Error + Upload Test

app/helpers/groups_helper.rb

 module GroupsHelper
-
   def can_change_group_visibility_level?(group)
     can?(current_user, :change_visibility_level, group)
   end

spec/models/project_spec.rb

@@ -844,7 +844,7 @@ describe Project do
     let(:project) { create(:project) }
     context 'when avatar file is uploaded' do
-      let(:project) { create(:project, :with_avatar) }
+      let(:project) { create(:project, :public, :with_avatar) }
       let(:avatar_path) { "/uploads/-/system/project/avatar/#{project.id}/dk.png" }
       let(:gitlab_host) { "http://#{Gitlab.config.gitlab.host}" }