使用Postman调用wxpush http接口，收到Code 1005报错

[thomashu1987]

报错内容见下：
{
"code": 1005,
"msg": "接口 [/api/send/message] 出现异常：Cannot construct instance of java.util.HashSet (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('UID_I0zo5S0iYjSkBj0AOnUUdLLIRPmC')\n at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 6, column: 8] (through reference chain: com.zjiecode.wxpusher.server.biz.bean.SendMessageReq["uids"])",
"data": null,
"success": false
}