grafana/k6 · error

frame not found for id %s

Error message

frame not found for id %s

What it means

ContentFrame() resolved a FrameID from the DOM node, but the page's frame manager has no registered frame with that ID. The iframe was detached or navigated away, or its frame-tree entry was never attached (out-of-process iframe attach race).

Source

Thrown at internal/js/modules/k6/browser/common/element_handle.go:867

}

// ContentFrame returns the frame that contains this element.
func (h *ElementHandle) ContentFrame() (*Frame, error) {
	var (
		node *cdp.Node
		err  error
	)
	action := dom.DescribeNode().WithObjectID(h.remoteObject.ObjectID)
	if node, err = action.Do(cdp.WithExecutor(h.ctx, h.session)); err != nil {
		return nil, fmt.Errorf("getting remote node %q: %w", h.remoteObject.ObjectID, err)
	}
	if node == nil || node.FrameID == "" {
		return nil, fmt.Errorf("element is not an iframe")
	}

	frame, ok := h.frame.manager.getFrameByID(node.FrameID)
	if !ok {
		return nil, fmt.Errorf("frame not found for id %s", node.FrameID)
	}

	return frame, nil
}

// Dblclick scrolls element into view and double clicks on the element.
func (h *ElementHandle) Dblclick(opts *ElementHandleDblclickOptions) error {
	dblclick := func(_ context.Context, handle *ElementHandle, p *Position) (any, error) {
		return nil, handle.dblclick(p, opts.ToMouseClickOptions())
	}
	dblclickAction := h.newPointerAction(dblclick, &opts.ElementHandleBasePointerOptions)
	if _, err := call(h.ctx, dblclickAction, opts.Timeout); err != nil {
		return fmt.Errorf("double clicking on element: %w", err)
	}

	applySlowMo(h.ctx)

	return nil

View on GitHub (pinned to 93accf6570)

Solutions

  1. Retry after a short wait — frame attachment is often just racing
  2. Wait for a known selector inside the iframe instead of grabbing the frame directly
  3. Prefer page.frameLocator(), which re-resolves the frame chain on each action
  4. Increase the timeout so iframe attachment completes

Example fix

// before
const frame = await (await page.$('#lateframe')).contentFrame(); // frame not found for id ...

// after
await page.waitForSelector('#lateframe >> .ready');
const frame = await (await page.$('#lateframe')).contentFrame();
Defensive patterns

Strategy: retry

Try / catch

async function getContentFrame(page, sel, tries = 3) {
  for (let i = 0; i < tries; i++) {
    try { return await (await page.$(sel)).contentFrame(); }
    catch (e) {
      if (!String(e).includes('frame not found')) throw e;
      await sleep(500); // frame tree still attaching
    }
  }
  throw new Error('iframe frame never attached');
}

Prevention

When it happens

Trigger: contentFrame() (directly or via frame-crossing selectors) on an iframe being removed/replaced at that instant, a cross-origin iframe whose OOP frame is not yet attached, or right after the iframe's src changed.

Common situations: Ad iframes swapping in and out; SPA re-renders replacing iframes; querying inside an iframe immediately after load before the frame tree settles.

Related errors


AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/5b5cd6c4a466029e. Report an issue: GitHub.