I have created a theme with custom blueprints to configure options to be shown in the Admin. This part works fine.
The problem is that I am unable to extend these blueprints. When I try to define a common blueprint and use it on multiple pages (these are root pages), I get this error:
“Argument 1 passed to Grav\Common\Page\Page::move() must be an instance of Grav\Common\Page\Page, null given, called in /vagrant/acade.local/public/user/plugins/admin/classes/admincontroller .php on line 498”
I have seen this post, but I still don’t get how to set this supposed missing variable: