```ruby
#
# Copyright (C) 2020 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

module CdcFixtures
  def self.create_web_conference
    ps = PluginSetting.find_or_create_by(name: 'adobe_connect')
    ps.disabled = false
    ps.save!

    return WebConference.new({
      title: 'default',
      conference_type: 'AdobeConnect',
      context_id: 1,
      context_type: 'Course',
      user_id: 1,
    })
  end
end
```

Set empty settings hash when creating a PluginSetting
user
```ruby
#
# Copyright (C) 2020 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

module CdcFixtures
  def self.create_web_conference
    ps = PluginSetting.find_or_create_by(name: 'adobe_connect')
    ps.settings = {}
    ps.disabled = false
    ps.save!

    return WebConference.new({
      title: 'default',
      conference_type: 'AdobeConnect',
      context_id: 1,
      context_type: 'Course',
      user_id: 1,
    })
  end
end
```
assistant