quenz@quenz-MS-7091:~$ sudo apt-get upgrade
[sudo] password for quenz: 
sudo: unable to open /var/lib/sudo/quenz/0: No such file or directory
W: Not using locking for read only lock file /var/lib/dpkg/lock
E: Unable to write to /var/cache/apt/
E: The package lists or status file could not be parsed or opened.