help

I'm using Lumi Cloud to create H5P activities. My Multiple Choice and True/False activities save successfully, but both the View preview and published links display a blank white area.

I tested on a Chromebook and a phone. Even a new Multiple Choice question with only two answers displays blank.

Chrome Console show

Uncaught TypeError: Cannot read properties of undefined (reading 'Button')

The stack trace points to question.js and multichoice.js.

Could you please investigate whether this is a current H5P loading issue?