GLIBC_2.33 not found

Steps to reproduce

1. setup fresh install of dockered NextCloud latest version fpm edition
2. install mail app
3. connect mail app to mail server
4. get mails
5. read Nextcloud Logs

Expected behavior

No error

Actual behavior

[15-Nov-2022 20:21:30] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
/var/www/html/custom_apps/mail/vendor/christophwurst/kitinerary-bin/src/../bin/kitinerary-extractor: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by /var/www/html/custom_apps/mail/vendor/christophwurst/kitinerary-bin/src/../bin/kitinerary-extractor)
sh: 1: flatpak: not found
sh: 1: kitinerary-extractor: not found

Mail app version

2.1.1

Mailserver or service

docker mailserver

Operating system

Dockered Nextcloud 25.0.1-fpm

PHP engine version

PHP 8.1

Web server

Nginx

Database

MariaDB

Additional info

whenever I open mail app I get [15-Nov-2022 20:21:30] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it.
and then glibc error

Start by reproducing the failure with the Dockered Nextcloud 25.0.1-fpm setup, Mail app 2.1.1, and the reported mail workflow. Inspect the kitinerary-extractor path under custom_apps/mail/vendor/christophwurst/kitinerary-bin and the Nextcloud logs; done means the GLIBC_2.33, flatpak, and extractor errors no longer occur when opening or reading mail.