Adding a channel through the web interface gives a javascript error

Hello,

The button for adding a new channel through a web interface is not working. When I check the browser console I see the following message which might be helpful: "TypeError: this.captcha is undefined (page.js)"

The link I'm using when trying to add the channel is: https://my.roku.com/add/RCV5PQJ

I'm using Linux (Ubuntu 18) Browser (Mozilla Firefox 71 64-bit) , I've also tried with Windows 10 Browser (Google Chrome 79 64-bit), but the error is the same.

Please fix the error. Is there a workaround for the issue ?

Best regards.