grafana/k6 · error

inserting text: %w

Error message

inserting text: %w

What it means

Wrapper returned by Keyboard.InsertText when the private insertText() fails, i.e. the CDP Input.insertText call is rejected by the browser. insertText inserts text as IME-style input without individual key events, and fails at the transport level when the session or target is gone.

Source

Thrown at internal/js/modules/k6/browser/common/keyboard.go:83

	}
	return nil
}

// Press sends a key press message to a session target.
// It delays the action if `Delay` option is specified.
// A press message consists of successive key down and up messages.
func (k *Keyboard) Press(key string, kbdOpts KeyboardOptions) error {
	if err := k.comboPress(key, kbdOpts); err != nil {
		return fmt.Errorf("pressing key: %w", err)
	}

	return nil
}

// InsertText inserts a text without dispatching key events.
func (k *Keyboard) InsertText(text string) error {
	if err := k.insertText(text); err != nil {
		return fmt.Errorf("inserting text: %w", err)
	}
	return nil
}

// Type sends a press message to a session target for each character in text.
// It delays the action if `Delay` option is specified.
//
// It sends an insertText message if a character is not among
// valid characters in the keyboard's layout.
func (k *Keyboard) Type(text string, kbdOpts KeyboardOptions) error {
	if err := k.typ(text, kbdOpts); err != nil {
		return fmt.Errorf("typing text: %w", err)
	}
	return nil
}

func (k *Keyboard) down(key string) error {
	key = k.platformSpecificResolution(key)

View on GitHub (pinned to 93accf6570)

Solutions

1. Confirm the page is still open (page.isClosed() === false) before calling
2. If the renderer crashed, re-launch/re-navigate and retry the fill
3. Use type() when you also need key events fired (event handlers watching keydown)
4. Wrap in try/catch and fail the iteration explicitly rather than continuing with partial input

Example fix

// before
await page.close();
await page.keyboard.insertText('done');

// after
if (!page.isClosed()) {
  await page.keyboard.insertText('done');
}

if (page.isClosed()) throw new Error('page closed before insertText');

try {
  await page.keyboard.insertText(text);
} catch (e) {
  if (/inserting text/.test(e.message) && !page.isClosed()) {
    await page.keyboard.insertText(text); // transient CDP failure: one retry
  } else throw e;
}

When it happens

Trigger: insertText('héllo') after page.close() or browser.close(); target crashed (renderer gone) before the call; CDP session detached while the input event is in flight.

Common situations: Using insertText for fast form filling after an earlier action already closed or crashed the page; races between script shutdown and pending input.

Related errors

• sending key down: %w
• sending key up: %w
• pressing key: %w
• typing text: %w
• key down: %w

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/ed7f2eed07b67e59. Report an issue: GitHub.