Solved
Sending Feedback on KB: TinyMCE needs API key.
When sending feedback on a KB article, the text is entered in a box driven my TinyMCE. These days you get a warning popup "A valid API key is required starting 2024".

When sending feedback on a KB article, the text is entered in a box driven my TinyMCE. These days you get a warning popup "A valid API key is required starting 2024".

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