grafana/k6 · error

unexpected type %T

Error message

unexpected type %T

What it means

Error "unexpected type %T" thrown in grafana/k6.

Source

Thrown at internal/js/modules/k6/browser/common/frame.go:1317

func (f *Frame) innerHTML(selector string, opts *FrameInnerHTMLOptions) (string, error) {
	innerHTML := func(apiCtx context.Context, handle *ElementHandle) (any, error) {
		return handle.innerHTML(apiCtx)
	}
	act := f.newAction(
		selector, DOMElementStateAttached, opts.Strict, innerHTML,
		[]string{}, false, withRetry, true, opts.Timeout,
	)
	v, err := call(f.ctx, act, opts.Timeout)
	if err != nil {
		return "", errorFromDOMError(err)
	}
	if v == nil {
		return "", nil
	}
	gv, ok := v.(string)
	if !ok {
		return "", fmt.Errorf("unexpected type %T", v)
	}

	return gv, nil
}

// InnerText returns the inner text of the first element found
// that matches the selector.
func (f *Frame) InnerText(selector string, popts *FrameInnerTextOptions) (string, error) {
	f.log.Debugf("Frame:InnerText", "fid:%s furl:%q sel:%q", f.ID(), f.URL(), selector)

	v, err := f.innerText(selector, popts)
	if err != nil {
		return "", fmt.Errorf("getting inner text of %q: %w", selector, err)
	}

	return v, nil
}

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/js/modules/k6/browser/common/frame.go:1317 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/5256380d3d05ca00. Report an issue: GitHub.