Markdown support for lessons and issues with WP Githuber MD

Hello,

I am testing LearnPress to build development courses. I would like to use Markdown to create textual lessons with a lot of code examples. Is there any markdown support in LearnPress?
I already use the WP Githuber MD and it works beautifully with Pages and Articles.
I enabled it also for the Courses and Lessons post types that comes with LearnPress but it won’t work. If I open the Developer Console I got the errors in this screenshot

Any hints to solve the problem or alternatives?

thank you