web api2 调用问题

get Upload Link
http://X.X.X.X:XXXX/api2/repos/d0e9ecfe-c4eb-4e31-b069-9e52ac68b38f/upload-link/
结果返回{“detail”:“Authentication credentials were not provided.”} 这是为什么?

额,汗,token xxxxxxxxxxxx 少个空格,解决了。