Hello,
I saw this PHP notice for the first time, and a quick form search didn't turn up a match:
Notice: Function Elementor\Controls_Manager::add_control_to_stack was called incorrectly. Cannot redeclare control with same name "meta_box_skin_group_columns". Please see Debugging in WordPress for more information. (This message was added in version 1.0.0.) in /var/www/mysite/public/wp-includes/functions.php on line 5905
It was repeated for dozens (at least) of controls.
Thanks,
RB