java 服务端注册用户时 registration is not open, please contact the app admin 带token了。还出现这种错误

之前一直都是好的，昨天突然注册不了了，报401，用postman测了下，{
    "error": "unauthorized",
    "timestamp": 1540292838799,
    "duration": 0,
    "exception": "org.apache.usergrid.rest.exceptions.SecurityException",
    "error_description": "registration is not open, please contact the app admin"
}这个错误。不知道是什么情况，代码没有动啊