Inline toolbar Error

Hi,

I'm following the plugin tutorial and am at the point of the inline tool bar
https://editorjs.io/enable-inline-toolbar

Whenever I add the line _'inlineToolbar: ['link']'_ to my tools I get the error in my console

**editorjs@latest:8 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'firstInput')**

I followed the tutorial as best as I can and understand the error.

Can anyone help please? I don't just wanna download the final files, defeats the purpose of following a tutorial.

Thanks

Haris