HKUDS/DeepTutor · error · HTTPException

Attachment not found

Error message

Attachment not found

What it means

Error "Attachment not found" thrown in HKUDS/DeepTutor.

Source

Thrown at deeptutor/api/routers/attachments.py:66

    Responds with ``Content-Disposition: inline`` so browsers preview PDFs
    and images directly in an ``<iframe>`` / ``<img>``. For unknown types
    the browser still falls back to download, which is fine for the
    drawer's "Download" button path.
    """
    store = get_attachment_store()
    if not isinstance(store, LocalDiskAttachmentStore):
        # Future remote backends should issue a redirect to the signed URL
        # here. Local-disk is the only backend today, so this branch just
        # guards against an unexpected configuration.
        raise HTTPException(status_code=501, detail="Attachment backend not servable")

    target = store.resolve_path(
        session_id=session_id,
        attachment_id=attachment_id,
        filename=filename,
    )
    if target is None:
        raise HTTPException(status_code=404, detail="Attachment not found")

    media_type, _ = mimetypes.guess_type(target.name)
    if not media_type:
        media_type = "application/octet-stream"

    # ``inline`` lets the browser preview the file when possible while still
    # honouring the suggested filename for the drawer's download action.
    headers = {
        "Content-Disposition": _content_disposition(target.name),
        # User-uploaded data; do not let intermediaries cache it.
        "Cache-Control": "private, max-age=0, must-revalidate",
    }
    return FileResponse(path=str(target), media_type=media_type, headers=headers)

View on GitHub (pinned to 3e82f13042)

When it happens

Trigger: Thrown at deeptutor/api/routers/attachments.py:66 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/DeepTutor@3e82f13042 (2026-08-27). Data as JSON: /api/errors/3d96a1f95b122631. Report an issue: GitHub.