[Answered ]-Django-ckeditor inline error

This is what happens when you try to create a new editor by using an element (textarea) which has already been assigned a CKEditor instance. You can list active instances with your console by exploring the CKEDITOR.instances object.

I also believe this is the one which solves your problem: CKEditor instance already exists . You should better destroy the existing instance or detect it and avoid replacing its DOM element.