Comment 2 for bug 1988227

Looks like the error

ERROR: /etc/apache2/conf-enabled/javascript-common.conf is a dangling symlink!

is unrelated to whether or not apache2 crashes. If you also delete /etc/apache2/conf-enabled/javascript-common.conf then the a2enconf failure still happens without a symlink issue.

New test case:

# lxc launch images:ubuntu/focal test-apache2
# lxc exec test-apache2 bash

# apt update && apt dist-upgrade -y
# apt install ubuntu-release-upgrader-core apport pciutils apache2 javascript-common -y
# rm /etc/apache2/conf-available/javascript-common.conf /etc/apache2/conf-enabled/javascript-common.conf
# do-release-upgrade