Yeah, that makes sense. good
This warning may be seen on all plugins out there. Therefore I added a fix that will fix it for all versions of the plugin...
I was first looking into returnning null, but I don't think that will work.
Looks like there already was a fix for it. Is it necessary to update the json with empty tutorialUrl objects ? This will cause the empty tutorialUrls to be stored in the db.
Anyway it is working well, good job!