What causes "failed to parse url: %w" in vxcontrol/pentagi?

failed to parse url: %w

Error message

failed to parse url: %w

What it means

Error "failed to parse url: %w" thrown in vxcontrol/pentagi.

Source

Thrown at backend/pkg/tools/browser.go:304

	}()

	wg.Wait()

	if errLinks != nil {
		return "", "", errLinks
	}
	if errScreenshot != nil {
		logger.WithError(errScreenshot).Warn("failed to capture screenshot, continuing without it")
		screenshotName = ""
	}

	return links, screenshotName, nil
}

func (b *browser) resolveUrl(targetURL string) (*url.URL, error) {
	u, err := url.Parse(targetURL)
	if err != nil {
		return nil, fmt.Errorf("failed to parse url: %w", err)
	}

	host, _, err := net.SplitHostPort(u.Host)
	if err != nil {
		host = u.Host
	}

	isPrivate := false

	hostIP := net.ParseIP(host)
	if hostIP != nil {
		isPrivate = hostIP.IsPrivate() || hostIP.IsLoopback()
	} else {
		ip, err := net.ResolveIPAddr("ip", host)
		if err == nil {
			isPrivate = ip.IP.IsPrivate() || ip.IP.IsLoopback()
		} else {
			lowerHost := strings.ToLower(host)

View on GitHub (pinned to ea665308ba)

When it happens

Trigger: Thrown at backend/pkg/tools/browser.go:304 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of vxcontrol/pentagi@ea665308ba (2026-09-01). Data as JSON: /api/errors/0bb6bdc3678fdaa5. Report an issue: GitHub.