Hi @arnaudbroes,
Thanks for your fast response.
I have already opened a ticket through your website on February 12th of this year about a similar issue.
Your team said that they are working on it.
This time I reached through here since it seems that this error is happening every time that I update an old post so it is slightly different issue…?
The ticket that I have opened was about same issue Keywords disappearing but on top of that an error was showing on top of the WordPress post.
It seems that this happened after AIOSEO did a major update changing layouts, etc…
I do not know if this is related but YOAST SEO plugin had a similar issue of “Meta Keywords disappearing” after they did a big update in their plugin few years ago.
Here is the link to that issue:
https://www.google.com/search?q=yoast+keywords+disspaear&oq=yoast+keywords+disspaear&aqs=chrome..69i57j33i10i160.10224j0j7&sourceid=chrome&ie=UTF-8
Cheers,
jS