Cannot login - v1.7.0

I updated my docker-compose file to use the v1.7.0 tag instead of the v1.4.0 tag and now I cannot log in to Commento. When I click login or press enter I am sent to the login form again with my username and password as URL query params.

In the browser's (Firefox) dev tools there is the following JS error:

TypeError: window.commento is undefined

Edit: This is when attempting to log into the dashboard