WebUSB API protected interface class error

Question

I\'m trying to use the WebUSB api with Chrome 67. The following code was working a month ago. I\'m not sure if something is changed or if I missing something. The error I\'m

Answer 1

I announced this change here:

https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/LZXocaeCwDw/GLfAffGLAAAJ