/var/lib/lemonldap-ng/ is in liblemonldap-ng-portal-perl 1.3.3-1.
This file is owned by root:root, with mode 0o755.
..
/var/lib/lemonldap-ng/captcha/
/var/lib/lemonldap-ng/captcha/data/
/var/lib/lemonldap-ng/notifications/
/var/lib/lemonldap-ng/portal/
/var/lib/lemonldap-ng/portal/captcha_output/
/var/lib/lemonldap-ng/portal/cdc.pl
/var/lib/lemonldap-ng/portal/index.pl
/var/lib/lemonldap-ng/portal/mail.pl
/var/lib/lemonldap-ng/portal/metadata.pl
/var/lib/lemonldap-ng/portal/skins/
/var/lib/lemonldap-ng/portal/skins/common
/var/lib/lemonldap-ng/portal/skins/dark
/var/lib/lemonldap-ng/portal/skins/impact
/var/lib/lemonldap-ng/portal/skins/pastel
/var/lib/lemonldap-ng/psessions/
/var/lib/lemonldap-ng/psessions/lock/
/var/lib/lemonldap-ng/sessions/
/var/lib/lemonldap-ng/sessions/lock/