RSS Feeds created from channels stopped working

[akasaka99]

Describe the bug
RSS feeds which worked fine for several months stopped working about a week ago on all public instances. Now it is even impossible to create a RSS feed from any instance

To Reproduce
Steps to reproduce the behavior:

1. As an example let's take instance: proxitok.pabloferreiro.es
2. Let's a take a TikTok channel (https://www.tiktok.com/@bdccarpenter)
3. RSS feed is = https://proxitok.pabloferreiro.es/bdccarpenter/rss
4. Feeds stopped working on all RSS readers and for example in IFTTT.com I am getting error message "Not a valid feed"

Expected behavior
Getting a RSS Feed of a TikTok channel

Logs
N/A: using a public instance

Environment (please complete the following information):
N/A: using a public instance

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