But that is causing a world of pain with errors and exceptions (currently showing 'Twig \ Error \ RuntimeError
An exception has been thrown during the rendering of a template ("No menu selected").').
My question is - are these instructions up to date and work for Fluent?
If the instructions are up to date I am happy to carry on trying to work out what the problem is myself.
Or is there another way of adding custom code to the functions.php file that I've missed?
I wouldn't use child-themes at all - it's more trouble than it's worth, you will be just swapping one issue for another.
Nevertheless, the instructions are up to date and do work with Fluent.
No, you have to change functions.php - there's no override capability for that.
Regards, Mark.
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