We noticed that for URL https://mediapart.fr/en/journal/international/160322/exiled-russian-oligarch-sergei-pugachev-putin-s-junta-and-why-ukraine-marks-its-downfall?_locale=en&onglet=full
the canonical URL is html-escaped:
with & instead of &
URL validators consider this url as invalid, because query contains ";" symbol. It seems to be a bug, could you check why it happens on your side and potentially fix it?
Thank you very much!