error 82 during login

[fskcn]

launched the docker in redhat linux for the first time, when type in IP:8080, cannot reach the login page but received the below error message:
{
"message": "Missing header: x-api-key",
"code": 20
}
in log , it said "error 82 --- [nio:8080-exec-5] c.e.f.c.h.ResponseExceptionHandler : Missing Header exception: x-api-key"
please help! Thanks!