Apparently, your system is having a dangling symlink /etc/apache2/conf-available/javascript-common.conf -> /etc/javascript-common/javascript-common.conf that prevents the installation of package javascript-common.
javascript-common has been broken for a while in sid, since apache2.4 is out. So maybe you created that link yourself by moving the content of conf.d/ into conf-available/ ? javascript-common does not create links and has never been creating links in /etc/apache2/conf-available/ It did create links in /etc/apache2/conf.d/ up to version 8, however. From which version were you upgrading? You can probably find that information in logs such as var/log/aptitude, /var/log/apt/history.log and /var/log/dpkg. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org