Error jQuery.Deferred exception: H5PIntegration is not defined

Hello everyone, h5p book went down on moodle when I wanted to add new content and now the page does not load at all (on any device). The error shows 

jQuery.Deferred exception: H5PIntegration is not defined.

Iam a total beginner and have no knowledge about JavaScript whatsoever. Attached you will find the error text.

Any help highly appreciated.

Thanks!!

 

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