Bugs in content types

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 !

Hi there, 

After updating the H5P plugin in Moodle, now when I click on an H5P activity, I obtain a blank page. I tried several navigators.

Any clue?

Thank you.

1. Detailed steps to reproduce the bug (exactly how and when did it happen): Logged-in user completes the Image Sequencing activity and sees a time/score. Logs out. On logging in again, the activity has reset to its original state. In settings, the boxes to log user results and save content state are checked, which works for all other content types as far as I can see.