Uncaught TypeError: element.editor is undefined

[cimenta]

hi

I am completely new to Trix and not a developer. I am using Trix in my new project so I am getting familiar with the it so I can customize it as I need. I was following the documentation here https://github.com/basecamp/trix I created simple jsFiddle with exact HTML and javascript from documentation but I am getting the error https://github.com/basecamp/trix

Could someone please help me to fix that error?

What I want to achieve is to add programmmatically a non-editable block at current cursor position

Thank you
Radek