iawia002/lux · error

ErrURLParseFailed

ErrURLParseFailed

Error message

url parse failed

What it means

Shared sentinel in extractors/errors.go, wrapped with a stack trace by ~30 throw sites across the codebase (douyu, bilibili, netease, twitter, tiktok, qq, youku, rumble, and many more) whenever an extractor's regex over the URL or the fetched HTML fails. It means 'the page or URL did not look like what this extractor expects' — not a network failure.

Source

Thrown at extractors/errors.go:9

package extractors

import (
	"errors"
)

var (
	// ErrURLParseFailed defines url parse failed error.
	ErrURLParseFailed            = errors.New("url parse failed")
	ErrInvalidRegularExpression  = errors.New("invalid regular expression")
	ErrURLQueryParamsParseFailed = errors.New("url query params parse failed")
	ErrBodyParseFailed           = errors.New("body parse failed")
)

View on GitHub (pinned to dd00f6d258)

Solutions

1. Identify which extractor raised it — the errors.WithStack trace or errors.Is against the sentinel tells you — and open that exact URL in an incognito browser.
2. If the page requires login or serves a challenge, supply a cookie (lux -c) or a different egress IP.
3. Update the specific failing regex in that extractor to the site's current HTML/URL shape.

Example fix

// identify the sentinel across wrapped stacks
if errors.Is(err, extractors.ErrURLParseFailed) {
	log.Printf("site layout or URL not recognized: %v", err)
}

func isURLParseFailed(err error) bool {
	return errors.Is(err, extractors.ErrURLParseFailed)
}

Check errors.Is(err, extractors.ErrURLParseFailed) after each Extract call; log the site and URL, skip the item, and continue the batch. The stack attached by errors.WithStack identifies which extractor's regex failed.

When it happens

Trigger: Site layout changes breaking HTML regexes (title/meta/script matching); login-walled, region-locked or anti-bot pages served instead of real content; URLs that do not match the extractor's expected id pattern for that site.

Common situations: Extractor goes stale after a site redesign; scraping from datacenter IPs; wrong, truncated or hand-typed URLs.

Related errors

• ErrInvalidRegularExpression
• ErrURLQueryParamsParseFailed
• Could not read page data
• can't match mp4 content downloadable url
• can't match gif content downloadable url

AI-assisted analysis of iawia002/lux@dd00f6d258 (2026-08-15). Data as JSON: /api/errors/f2a1bc488f8ab9bd. Report an issue: GitHub.