apt - Unmet dependencies (linux-headers, linux-image)

I am trying to install a program on my Linux.
When running: sudo apt-get install nams I keep getting:

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
         linux-image-extra-4.4.0-71-generic :
          Depends: linux-image-4.4.0-71-generic but it is not going to be installed
         linux-image-generic :
          Depends: linux-image-4.4.0-71-generic but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

I tried to fix it doing: sudo apt-get -f install