antiwork/gumroad · error · ResponseError

The preview couldn't be loaded.

Error message

The preview couldn't be loaded.

What it means

Error "The preview couldn't be loaded." thrown in antiwork/gumroad.

Source

Thrown at app/javascript/data/agent.ts:168

    method: "POST",
    accept: "json",
    url: Routes.internal_agent_custom_html_preview_path(),
    data: {
      endpoint: proposedActionEndpoint(action),
      ...(typeof body === "object" && body !== null ? body : {}),
    },
  });
  const json = typia.assert<CustomHtmlPreviewResponse>(await response.json());
  if (!json.success) throw new ResponseError(json.error);
  // The POST staged the document, but the iframe's own GET is a separate request that can still
  // miss (say, the staged document expired or was evicted). Probe the URL before reporting the
  // preview loaded — the card enables Confirm on that signal, and it must never enable it while
  // the iframe is about to render the "preview expired" notice instead of the proposed page.
  // The probe-then-load window itself is not worth guarding: the token was staged moments ago,
  // so it sits a full TTL away from expiry and newest in the seller's eviction order — losing it
  // mid-window would take a burst of further stagings by the same seller within milliseconds.
  const probe = await request({ method: "HEAD", accept: "html", url: json.preview_url });
  if (!probe.ok) throw new ResponseError("The preview couldn't be loaded.");
  return json.preview_url;
};

// One persisted message of a stored conversation, as returned by the conversations endpoint. The
// server keeps each turn's structured extras (proposed-action card, object cards, applied status)
// so the chat re-renders history exactly as it looked live.
export type ConversationMessage = {
  role: ChatRole;
  content: string;
  proposed_action?: ProposedAction | null;
  proposal_message_id?: string | null;
  objects?: DisplayObject[] | null;
  action_status?: "executing" | "applied" | "unknown" | "dismissed" | null;
};

export type Conversation = {
  id: string;
  title: string | null;

View on GitHub (pinned to afeacbd394)

When it happens

Trigger: Thrown at app/javascript/data/agent.ts:168 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of antiwork/gumroad@afeacbd394 (2026-08-21). Data as JSON: /api/errors/ec4b0939bc96a617. Report an issue: GitHub.