server returned HTTP status 401 Unauthorized

hello everyone ,

i have a problem with a client , when a clicked on QAN analytics i got the
“There is no query data because the MySQL Server is not configured for monitoring. For details about the required configuration, see Configuring MySQL for Percona Monitoring and Management in PMM documentation.” message,

so when i checked in prometheus i seen " server returned HTTP status 401 Unauthorized" on this client .

is this an authentication problem between server and this client (i mean the password of client’s mysql DB is wrong) ?

help me please