Description

When saving an asset with dynamic location, we need to use the canonical of the duplicateOf element.

Steps to reproduce:

• on a clean v4 installation
• create a local filesystem and a volume that uses it
• create an assets field with “Restrict assets to a single location” checked; “Asset Location” set to {level == 1 ? slug : parent.slug}
• create a structure section with an entry type containing that assets field
• create an entry in that structure (level 1); use the “Upload files” button to upload an asset - at this point, everything works as expected
• fully save the entry and observe an “Invalid subpath” exception being thrown

Related issues

#16220

Thanks for reporting, @olivierbon!