The subform and parent form must contain the #parents property, which must be an array. Try calling this method from a #process callback instead.

Problem/Motivation

I got error message "The subform and parent form must contain the #parents property, which must be an array. Try calling this method from a #process callback instead." while selecting component from the dropdown.

Steps to reproduce

click embedded_content button in ckeditor
select component from drop down
error message: "The subform and parent form must contain the #parents property, which must be an array. Try calling this method from a #process callback instead."

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes