[LINE Bot Debugging] A 403 Error and Three Underlying Issues: npm Version Drift, Node.js Requirements, and Cloudflare Verificati

Previously "URL retrieval failed, help me check the logs." I receive this kind of report about once every week or two. Usually, it's because a website has added another layer of anti-crawling protection. A quick check and adding a fallback method to bypass it usually settles it. This time started the same way: a user sent an acm.org URL, and the summary feature spat out an error. Upon…