I am trying to implement a PublicWidget:

import publicWidget from '@web/legacy/js/public/public_widget';

When I add that to my js file I then get this message when loading the editor:

"The following modules are need by other modules but have not been defined, they may not be present in the correct asset bundle:  @web/legacy/js/public/public_widget

I've tried to explicity load it though I know I shouldn't have to:

'web.assets_frontend': [ 'web/static/src/legacy/js/public/public_widget.js', 'rental_sales/static/src/js/availability_calendar_external.js', ]

Driving me crazy!