If a specified user has not created any lists the returned JSON (decoded in PHP) is  (square brackets) expecting a JSON object. Something wrong in the API?
Have you examined the raw response? If we’re returning “”, that’s valid JSON for an empty set. What JSON parsing engine are you using? Perhaps it is too strict?
I’m using php. So if it’s an empty array, the decoded JSON should look like:
and not “”.
Alright. It’s was a parsing error. The raw JSON data was correct “”. But it is not decoded into “Array()” instead it returns a string “”. This issue is not related to the API itself. Thanks for the reply anyway.