Few month ago I've created a flow ich publish the message on the chat in MS Temas when the new item is create on a SharePoint Online list. Since few weeks I've get this message in a flow:

This happened so far three times - I can’t find the solution.
The message said that I’m not a member o the chat but it isn't the true because I’m member of this chat.
Any ideas what could this means and how to fix it.