"Authorization is required to perform that action"

Why do I get this error?

This happens when you multiple Google accounts in your browser. For example you may switch from name@gmail.com to name@company.com. This is a documented Google bug.

Temporary Solution

Load your browser in Incognito/InPrivate (Ctrl+Shift+N) mode. Login to with your Google account and run the add-on.

Permanent Solution

For every Google account create a person/profile in your Chrome browser.