Unauthorized error appears while logging in

User impact: User can be confused with the error

STR:

1. Open Login page of PMM
2. Wait for a little bit

Actual result: Unauthorised error appears

Same error appears when user already filled in username and password and clicked on "Log in" button

there is a call http://18.117.8.124/graph/api/frontend-metrics which return "

"

Expected result: No such error