Did you try running;
dpkg --configure -a
as it suggests?
daniel@daniel-XPS-8950:~$ dpkg --configure -a
as it suggests?
dpkg: error: requested operation requires superuser privilege
Assembler messages:
Error: can't open it for reading: No such file or directory
it: Error: can't open suggests? for reading: No such file or directory
daniel@daniel-XPS-8950:~$