Course presentation - "Field group" error / library problem

Hi everyone,

help !!! I have a BIG problem with my H5P activity, and all my course presentation modules are down... and I don't know how to resolve it !

I'm running under Moodle 3.5.8+, and I've got the latest version of H5P (2019111300).
Until this morning, it was alright. But I went on the admin and, as I usually do, I cliked arrows to update contents of libraries. Now, my course presentation latest library is the 1.21.4.

But now, my activy Course Presentation doesn't work anymore !

• I can select Course presentation in the selector, but the interface doesn't appear, except this message [field:group:coursepresentation:presentation]
• All my other Course presentation activities doesn't work correctly ! Some doesn't appear at all, some just show me 3 or 4 slides, some are entierly working... But most of the time, I just can't navigate between slides.

Except Course Presentation, all my other activities are working, and I cant access the admin part. But for this one... nothing at all.

I tested on many navigators (Firefox, Chrome, Edge, Safari) : no changes.

Console error : I looked at my Firefox console, I have some messages, but not always the same depending to the module. Most of the time, I have this errors :

• TypeError: XXX is undefine (XXX is randomly related to H5P.Question, H5P.Title, s, instance.....)
• Unable to find constuctor for: H5P.CoursePresentation 1.21 h5p.js:976:13 (but it's more rare).

Does anybody could help me ?
The problem seems to come from the library, but how can I reinstall it ? Reupload it ? Or maybe bring back my contents to the lower version of library ???

Thanks in advance !

Olivier