Unable to import any recipes from URL

[yetanothercarbot]

Nextcloud 25.0.2, Cookbook 0.10.1

Whenever I try to import from a URL, including domains that worked in the past, an error message pops up with the message "No parser found for the given import."

A number of libxml warnings do appear in the log, but they are about missing semicolons and such - they don't seem that important (?)

In the browser console, a few errors are also posted:

Just in case, I tried Firefox instead of a Chromium-based browser but that makes no difference.

Not really sure where to start with fixing this on my server, so I'd appreciate any help :)