Comment 1 for bug 1865900

Hi Riho,

Thank you for taking the time to report this bug. I've mentioned this on bug LP: #1845263 as a possible regression related to the
2.4.29-1ubuntu4.12 update that backported the TLSv1.3 support to bionic. That update indicated some expectation that certain environments might be adversely affected when the new protocol is added, so it would be helpful to understand in more detail about your particular setup. That may help identify what went wrong precisely in this case.

Please execute the following command, as it will automatically gather debugging information, in a terminal:

  apport-collect 1865900

Alternatively, if you want to manually attach things (e.g. so you can remove any sensitive information), the files this collects includes:

/etc/apache2/apache2.conf
/etc/apache2/sites-enabled/*
/etc/apache2/conf.d
/var/log/apache2/error.log
`/usr/sbin/apachectl -D DUMP_MODULES`

Obviously the piece that'll need more examination is the client certificate configuration, so if there are other config files or logs of relevance to that you're aware of, those details could be useful as well.