Run H5P tools and files with Node x Express

Hi !

I'm trying to run H5P librairies with Node server and Express Backend. I used this project : https://github.com/Lumieducation/h5p-nodejs-library

The 2 examples of the project ('course-presentation' and 'accordion') are working well ! But I can't create new H5P content, and I can't display the H5P Editor. Could you help me please ?

My goal is to create a Node x Express rendered website with the H5P Editor (for admin) and with H5P created contents (for learners).

Thanks a looot !