If during the switch from Brightcloud to PAN-DB the URL categories fail to migrate you will get a commit error on each profile that retains the Brightcloud URL categories.
profiles -> url-filtering -> <Profile Name> -> license-expired Not available for PAN-DB
profiles -> url-filtering -> <Profile Name> -> license-expired is invalid
The Brightcloud URL categories should automatically migrate to PAN-DB categories during the activation of PAN-DB, however, if this migration fails you can retry/force it by reverting to running config. After reversions your URL-Filtering profiles should reflect only the PAN-DB categories and commit validations errors should clear.