Echo RSS Feed Post and Nitter RSS

Hello, Previously I always used Nitter.net to create RSS feeds from twitter accounts and their tweets. This has always worked fine with Echo RSS feed to post as well. But now it doesn't work anymore, I get a red cross when generating. This is an example of a Nitter RSS Feed from a twitter account: https://nitter.net/financialjuice/rss Maybe it is the RSS Feed or maybe there is something changed in the plugin? Thanks in advance for support!