Problem/Motivation Views configurations using the "flagged" field are producing "The site's configuration does not match the associated schema" errors on /admin/reports/status - "Missing schema" is listed as the problem on individual configs.
Steps to reproduce Install and enable config_inspector and visit your Status report page (/admin/reports/status) to see error messages.
Proposed resolution Add schema for views.field.flag_flagged to flag/config/schema/flag.views.schema.yml
Remaining tasks I'll make a patch to add the schema.
User interface changes None.
API changes None.
Data model changes None.