h5p from lumi.education don't work - H5P.isEmpty is not a function

[dwbotsch]

After converting h5p from lumi education, they fail to work (I have a simple three question true/false) with:

connection.initialize called.
SCORM_API_wrapper.js:914 SCORM.API.find: Error finding API.
Find attempts: 0.
Find attempt limit: 500
SCORM_API_wrapper.js:914 SCORM.API.find: API found. Version: 1.2
SCORM_API_wrapper.js:914 API: [object Object]
SCORM_API_wrapper.js:914 SCORM.data.get('cmi.core.lesson_status') value: not attempted
SCORM_API_wrapper.js:914 SCORM.data.set('cmi.core.lesson_status') value: incomplete
questionset.js:89 Uncaught TypeError: H5P.isEmpty is not a function
at new H5P.QuestionSet (questionset.js:89:28)
at i.newRunnable (frame.bundle.js:3:110784)
at HTMLDivElement. (frame.bundle.js:3:101874)
at Function.each (frame.bundle.js:3:5393)
at init.each (frame.bundle.js:3:2175)
at i.init (frame.bundle.js:3:100922)
at HTMLDocument. (frame.bundle.js:3:130357)
at u (frame.bundle.js:3:7813)
at Object.fireWith [as resolveWith] (frame.bundle.js:3:8612)
at Function.ready (frame.bundle.js:3:3430)

Tested in both firefox and chrome.