Hi,
https://www/icinga/ don't use authentication and by clicking for instance on "Host detail" the following message is displayed:
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It appears as though you do not have permission to view information for any of the hosts you requested...
If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI and check the authorization options in your CGI configuration file.
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Linux tjener.intern 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20) x86_64 GNU/Linux
Claudio