Apache httpd: mod_proxy_hcheck URL based HTTP basic authentication

I am trying to use mode_proxy_hcheck to do health checks and failover for an application that requires HTTP Basic authentication.

<proxy balancer://serverpool>
  BalancerMember http://username:password@hostname1 hcmethod=GET hcexpr=expression hcuri=/rest_or_url hcinterval=1
  BalancerMember http://username:password@hostname1 hcmethod=GET hcexpr=expression hcuri=/rest_or_url hcinterval=1
</proxy>

This is not working. This is the log message I get

[Tue Sep 06 22:02:57.434388 2022] [proxy_hcheck:debug] [pid 2044:tid 2140] mod_proxy_hcheck.c(704): AH03254: HTTP/1.1 401 Unauthorized

If you have successfully managed to do something similar, your advice will be much appreciated.