Drag and Drop

Hi, i'm trying to load several resources in Moodle, but it gives me this errors:

Error 1:

Could not get posted H5P.

Error 2:

OK (200)

Unable to interpret response.

Please check your error log.

I've checked the resources and all look fine. I send attached one of the resources.

Please help. 

I'd like to suggest a behavioral setting for the "Drag and Drop" content type.
Currently, when the user presses the "Retry" button, all the labels bounce back to their starting point. It would be nice to have an option to leave the correct ones where they are, and only the labels that the user got wrong, will bounce back.
This way the users can focus only on what they need to improve

I have just noticed that in the Drag and Drop, that there is only the option to list the title - no longer instructions for the task.

So on the object, the title appears where you would assume the task instruction should be.

Is this just a glitch?

Thanks

Liza