I developed a new Qrcodegen plugin, because the one based on jonrandoem don’t work anymore.
Mine is based on some plugins dev by fox, and so, is compatible with xhr requests and the new plugin scheme.
i’ve replaced old plugin with yours here - https://git.tt-rss.org/fox/tt-rss/wiki/Plugins#generate-qr-codes-from-article-links-with-xhr-support-and-no-disk-cache