Discussion board where members can learn more about Integration, Extensions and API’s for Qlik Sense.
We currently do not expose any printing api's so you have to reverse engineer ours (unsupported) or roll your own.
You could use this node project as a starting point https://github.com/mindspank/chartcacher
How can I allow my code access?
You can safely ignore that error.
It is just trying to fetch the list of visualization extensions which you dont need in a mashup scenario.