jonah@jonah-desktop:~$ sudo dpkg --configure -a
Setting up selinux-policy-default (1.26-7) ...
cat: /selinux/policyvers: No such file or directory
Compiling policy ...
policyvers value 0 not in range 15-20
usage:  /usr/bin/checkpolicy [-b] [-d] [-M] [-c policyvers (15-20)] [-o output_file] [input_file]
make: *** [/etc/selinux/./policy/policy.] Error 1
dpkg: error processing selinux-policy-default (--configure):
 subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
 selinux-policy-default