Redirect to second language 404 page

Hi, is there a possibility to redirect to another 404 page for secondary language used on website? Default language is Polish (https://dartl.pl) and it redirects to https://dartl.pl/nie-znaleziono/ page as it’s set in plugin settings, and it’s ok. For English version https://dartl.pl/en/ it redirects also to Polish version of 404 page, but should redirect to https://dartl.pl/en/not-found/ instead. Any ideas how to manage that? I use Polylang plugin for language versions of page. Best regards, Tom

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