Storage full — remove files or Upgrade to keep uploading
Upload UI feedback (upload-upgrade-feedback / public copy) when the account has no room left; includes an Upgrade path.
Why this happens
Member storage quota is full. Sibling strings: Storage quota exceeded and Storage quota exceeded — Upgrade to get more space.
Diagnose and fix
1. Delete or permanently remove files; empty trash if it still counts.
2. Upgrade the plan (Buy Premium / Premium Pro) for more space.
3. Retry the upload after space is free.
4. Distinct from Storage server disk quota is full (server-side disk, not member plan).