Private file — only owner can create link
Someone signed in (but not as the owner) tried to Create download link on a private file (isPublic=false). Only the owner may mint grants.
Why this happens
Private files are not for public sharing. Guests see Private file — sign in as owner instead. Consuming an already-minted private link without the owner session uses the “same browser” message.
Diagnose and fix
1. Owner: sign in as yourself and mint the link, or set the file Public.
2. Other members: ask the owner for a public link or access.
3. Admin: check Private files / public override tools if staff need to intervene.
4. Distinct from Premium-only (flag) and password-protected files.