Preparing to unpack .../hashalot_0.3-8_amd64.deb ...
Unpacking hashalot (0.3-8) ...
Setting up hashalot (0.3-8) ...
Setting up linux-headers-4.13.0-21-generic (4.13.0-21.24) ...
Examining /etc/kernel/header_postinst.d.
run-parts: executing /etc/kernel/header_postinst.d/dkms 4.13.0-21-generic /boot/vmlinuz-4.13.0-21-generic
run-parts: /etc/kernel/header_postinst.d/dkms exited because of uncaught signal 9
Failed to process /etc/kernel/header_postinst.d at /var/lib/dpkg/info/linux-headers-4.13.0-21-generic.postinst line 110.
dpkg: error processing package linux-headers-4.13.0-21-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
Processing triggers for man-db (2.7.6.1-2) ...
Setting up linux-image-4.13.0-21-generic (4.13.0-21.24) ...
Internal Error: Could not find image (/boot/vmlinuz-4.13.0-21-generic)
dpkg: error processing package linux-image-4.13.0-21-generic (--configure):
 subprocess installed post-installation script returned error exit status 2