QRCode Matrix nil query

[ondrej-tucek]

Hi.
In our a project we use this library following way:

QRCode.encode("http://localhost:4040/events//Users/smita/projects/elixir/fotobouda/server/photo/tmps/2018-07-28_07-44-15-809348_original-ocwo.jpg")

And as you can see in terminal output, the QRCode.Matrix contains a couple of nils or with render function:

Is that correctly behaviour?

I don’t know if this is fine. We’re working with this matrix further in project (we transform the matrix to svg). Can I assume if this turquoise color (I think that color is came from my terminal setting.) we’ll change to white the functionality of QR would be still okay?