Errors using Rank Math and Elementor Pro

I Used Elementor to create a ‘section template’. This creates a new admin menu entry ‘Elementor Templates’.
When I click on that entry I get a tabbed page where I can view various types of template.
The ‘Sections’ tab works normally, showing me the template I have created.
The other tabs which have no templates cause errors.

Starting with:
Notice: Undefined offset: 0 in C:\wamp\www\mytinstall.local\wp-content\plugins\seo-by-rank-math\includes\replace-variables\class-base.php on line 155
Then
Notice: Trying to get property ‘taxonomy’ of non-object in C:\wamp\www\mytinstall.local\wp-content\plugins\seo-by-rank-math\includes\admin\class-admin-bar-menu.php on line 221
Followed by quite a few notices fro wp-includes/ files

I can disable these notices with WP_DEBUG but there remains a single
Warning: Creating default object from empty value in C:\wamp\www\mytinstall.local\wp-includes\taxonomy.php on line 537

I have used healthcheck, disabled other plugins and so forth with no effect.

In all cases everything remains functional and for my use I would just live with it, but it will
just not do for client sites.

Do what you can, or advise what I can do.

Thanks
Karl