proxy errors
Why i am getting this errors?

[2020-02-04 14:34:52.994] [pool.supportxmr.com:3333] error: "Unauthenticated", code: -1
[2020-02-04 14:34:53.007] [pool.supportxmr.com:3333] error: "Unauthenticated", code: -1
[2020-02-04 14:34:53.027] #130737 accepted (661904/111+84) diff 55170 ip *.*.*.* (3061 ms)