Resolves:
$ docker-compose run --rm osem bundle exec rspec ./spec/datatables/user_datatable_spec.rb:97
…
ActiveRecord::StatementInvalid:
PG::GroupingError: ERROR: column "users.id" must appear in the GROUP BY clause or be used in an aggregate function
Supercedes https://github.com/openSUSE/osem/pull/2031 .
Note:
* "Questions" modals have been dropped from this view; questions are no
longer asked on registration, since Surveys(PR#1100) were added.