garrytan/gstack · error · Error

Cannot dispatch: tab ${input.tabId} not found. Cause: tab wa

Error message

Cannot dispatch: tab ${input.tabId} not found.
Cause: tab was closed between command queue and dispatch.
Action: $B tabs to list current tabs.

What it means

Error "Cannot dispatch: tab ${input.tabId} not found. Cause: tab was closed between command queue and dispatch. Action: $B tabs to list current tabs." thrown in garrytan/gstack.

Source

Thrown at browse/src/cdp-bridge.ts:154

      `DENIED: ${qualified} is not on the CDP allowlist.\n` +
        `Cause: deny-default posture; method has not been audited and added to cdp-allowlist.ts.\n` +
        `Action: if this method is genuinely needed, open a PR adding it to CDP_ALLOWLIST with a one-line justification + scope (tab|browser) + output (trusted|untrusted).`
    );
  }
  // Acquire the right tier of lock.
  const acquireStart = Date.now();
  const release =
    entry.scope === 'browser'
      ? await input.bm.acquireGlobalCdpLock(CDP_ACQUIRE_TIMEOUT_MS)
      : await input.bm.acquireTabLock(input.tabId, CDP_ACQUIRE_TIMEOUT_MS);
  const acquireMs = Date.now() - acquireStart;
  logTelemetry({ event: 'cdp_method_lock_acquire_ms', domain: input.domain, method: input.method, ms: acquireMs });
  logTelemetry({ event: 'cdp_method_called', domain: input.domain, method: input.method, allowed: true, scope: entry.scope });

  try {
    const page = input.bm.getPageForTab(input.tabId);
    if (!page) {
      throw new Error(
        `Cannot dispatch: tab ${input.tabId} not found.\n` +
          'Cause: tab was closed between command queue and dispatch.\n' +
          'Action: $B tabs to list current tabs.'
      );
    }
    let session;
    try {
      session = await getCdpSession(page);
    } catch (e: any) {
      throw new Error(
        `CDPSessionInvalidated: ${e.message}\n` +
          'Cause: Playwright context was recreated (e.g., viewport scale change) and the prior CDP session is stale.\n' +
          'Action: retry the command; the bridge will create a fresh session.'
      );
    }
    // Race the call against a hard timeout.
    const callPromise = session.send(qualified, input.params);
    const timeoutPromise = new Promise((_, reject) =>

View on GitHub (pinned to 94993f7401)

When it happens

Trigger: Thrown at browse/src/cdp-bridge.ts:154 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of garrytan/gstack@94993f7401 (2026-08-12). Data as JSON: /api/errors/e68de6125f48d9f3. Report an issue: GitHub.