[horde] H6 new install stuck with web gui access

[Andreas Mauser]

Hi and thank you so much for the H6 development.

I was successful in installing prerequisites, preparing apache with minimal vonfig and getting a cert.

Also the H6 installation via composer seemed to be successful (it only complained about cache but completed successfully: Cannot create cache directory /var/www/.cache/composer/files/, or directory is not writable. Proceeding without cache. See also cache-read-only config if your filesystem is read-only.)


This is the last step which i was able to do successfully:

https://wiki.horde.org/Doc/Dev/H6/Installation/InstallBase?referrer=Doc%2FDev%2FH6%2FInstallation


Now I would like to finish the installation via GUI via https, but get a "Service unavailable" with only this message in the log:

wm.domain.com:80 10.x.x.x - - [06/Mar/2025:22:39:10 +0100] "\x16\x03\x01\x02" 400 488 "-" "-"


Or, when accessing via http at least I get a directory listing:

wm.domain.com:80 10.x.x.x.x - - [06/Mar/2025:22:46:25 +0100] "GET /icons/unknown.gif HTTP/1.1" 200 473 "https://wm.domain.com/wm/" "Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0"

This is strange as a cert for the domain does exist. 

What does that mean and where can I solve this?

Best regards,
Andreas