Display array: unsupported JSON-structure

Hello
This is my json: http://ddragon.leagueoflegends.com/cdn/4.4.3/data/en_US/champion/Aatrox.json
And i want display name and id from skins.
I use shortcode:
[jsoncontentimporter url=”http://ddragon.leagueoflegends.com/cdn/4.4.3/data/en_US/champion/Aatrox.json” numberofdisplayeditems=”30″ basenode=”Aatrox”]
{subloop-array:skins:6}name:{name}, id: {id}
{/subloop-array}
[/jsoncontentimporter]

It’s display: unsupported JSON-structure.
Can you help me fix this problem?
Thank you.

https://wordpress.org/plugins/json-content-importer/