Removendo erros com erros
sudo rm /etc/apache2/sites-available/otrs.conf
sudo rm /etc/apache2/sites-enabled/otrs.conf
sudo rm /home/$USER/.cache/software-center/piston-helper/rec.ubuntu.com,api,1.0,recommend_app,otrs,,81384ef50f6b1038436de465afd51202
sudo rm /home/$USER/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,nl,any,any,any,otrs,page,1,helpful,,251358f9bbc99053ed71c6082e485827
sudo rm /home/$USER/.cache/software-center/rnrclient/reviews.ubuntu.com,reviews,api,1.0,reviews,filter,nl,ubuntu,quantal,any,otrs,page,1,helpful,,7af23859b6e91926d3623a0d118dbf90
sudo rm /var/cache/apt/archives/otrs2_3.1.7+dfsg1-5_all.deb
sudo rm /var/cache/apt/archives/otrs_3.1.7+dfsg1-5_all.deb
sudo rm /var/crash/otrs2.0.crash
sudo rm /var/crash/otrs2.0.upload
sudo rm /var/crash/otrs2.0.uploaded
apenas no caso de eu perder alguma coisa:
sudo apt-get -y autoremove
sudo apt-get -y clean
sudo apt-get -y autoclean
sudo apt-get -y check
sudo dpkg --configure -a
sudo apt-get install -f
Fonte :