sumoselect css does not load and breaks select lists

vardoc_theme.libraries.yml has

jquery.sumoselect:
  css:
    component:
      libraries/sumoselect/css/sumoselect.css: { minified: true }

but sumoselect.css does not exist. changing to below fixes it:

jquery.sumoselect:
  css:
    component:
      libraries/sumoselect/css/sumoselect.min.css: { minified: true }