Function newPurchase uses malformed body

[Revadike]

https://github.com/SzymonLisowiec/node-epicgames-client/blob/develop/src/Client/index.js#L559

It returns token with undefined as value, because the body the request returns is malformed. It contains this error:

I tried using the webbrowser purchase URL instead (https://www.epicgames.com/store/purchase), but that doesn't work either, because it requires cookies to work.