display error with @RequestParam(value = "order",required = false,defaultValue = "-crtdate")LinkedList<String> order

[ysjiang4869]

using spring @RequestRarm as title ,but display wrong.

The execute button will be invalid and the order param can use.
api-docs json can be see follow
{ "name": "order", "in": "query", "description": "order", "required": false, "type": "array", "items": { "type": "string" }, "collectionFormat": "multi", "default": "-crtdate" }