I use this code to try to read things: 

 json paintingCollection |
json := (NeoJSONReader fromString: (ZnEasy get: 'https://www.rijksmuseum.nl/api/nl/collection?key=14OGzuak&format=json&type=schilderij&toppieces=True') contents).
paintingCollection := PaintingCollection fromJSON: json.
paintingCollection inspect

and now suddenly I see a message that #add: is sent to nill 

Roelof



Op 5-11-2018 om 22:33 schreef Erik Stel:
Roelof,

What does not work in your code? How do you call
PaintingCollection>>fromJSON: ?

>From what I see this code could work if used like (replace URL with actual
URL):







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