The reference page for the structure fields states, that it is possible to define a structure field inside a structure field → https://getkirby.com/docs/reference/panel/fields/structure#fields
I tried setting up a nested structure field, in order to allow a user to create categories and then create items (consisting of multiple fields, hence the structure field inside the structure field) inside those categories:
projects: label: Personal Projects type: structure fields: project_categories: label: Project Categories type: structure fields: info: label: Project Info type: text client: label: Project Client type: text year: label: Year type: date
Unfortunately, I get the following error when trying to enter something into the field:
Where am I making a mistake? Or is it actually not possible to put structure fields inside structure fields?