Interactive Video

Hi, this used to work fine, but since a day or 3 I cannot export h5p interactive video files anymore.

I cannot figure out what is the cause. 

All software is up to date. Theme is Divi. I tried deactivating all plugins except h5p, no difference.

I added a screenshot of what my screen looks like after clickin the export button.

Does anyone else have this problem, or does anyone have an idea what could be causing this?

thanks!

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