dr_data_explorer.routing.yml

dr_data_explorer.content:
  path: '/data_explorer'
  defaults:
    _controller: 'Drupal\dr_data_explorer\Controller\DataExplorerController::content'
    _title: 'Data Explorer'
  requirements:
    _permission: 'access content'
dr_data_explorer.settings:
  path: '/admin/config/system/dr_data_explorer/config'
  defaults:
    _form: '\Drupal\dr_data_explorer\Form\Settings'
    _title: 'Data Explorer'
  requirements:
    _permission: 'administer site configuration'