What does “Can not record on internal Chrome pages” mean?

Since Chrome extension isn’t designed to work on internal pages, you won’t be able to record on any of the URL that starts with ‘chrome://*‘ Including Chrome’s new tab (With empty URL bar)

Can not record on internal Chrome pages clapboard storyxpress

Whenever that happens, you would see a message “Can not record on internal Chrome pages” on your Clapboard window.