How to suppress the «Server 'unix_http_server' running without any HTTP authentication checking» Supervisor log message?

System Administration
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CRIT Server ‘unix_http_server’ running without any HTTP authentication checking

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To suppress this message, add the following 2 options to the [supervisorctl] and [unix_http_server] sections of the Supervisor’s configuration file:

password = dummy
username = dummy

github.com/Supervisor/supervisor/issues/717#issuecomment-176860145