Lesson and README links return 404 and DNS errors
Links in the README and lessons lead to 404, 403 or DNS-failed pages, and nobody is alerted.
Tier I · Proven The best-established problems.
14 public reports · first reported 30 October 2025 · last reported 4 October 2026
What's going wrong
Automated link checker reports repeatedly show dead or blocked links across the README, lesson pages and translated files, including 404 errors, forbidden responses, timeouts and a badge that fails with a DNS error.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 14 reports are about, and how many came each month.
- Related problems.
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