The theme being displayed in your first image is the v8 dashboard of CT, not the v9 (CT9).
You would need to select the v9 theme under Appearance > Themes. You’ll see a yellow ribbon in one of the top corners with Version 9.0.
but how does that tie into my child theme?
Sorry, I’m not following.
Note: The error message basically says the server MySQL needs to be updated in order to run that specific command.