I updated it froze and I restarted still cant see low latency kernels after updating grubpackage linux-signed-image-4.13.0-17-generic 4.13.0-17.20 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

update and it crashed

ProblemType: Package
DistroRelease: Ubuntu 17.10
Package: linux-signed-image-4.13.0-17-generic 4.13.0-17.20
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
Date: Tue Nov 28 03:17:52 2017
DuplicateSignature:
 package:linux-signed-image-4.13.0-17-generic:4.13.0-17.20
 Setting up linux-signed-image-4.13.0-17-generic (4.13.0-17.20) ...
 cp: cannot stat '/boot/vmlinuz-4.13.0-17-generic': No such file or directory
 dpkg: error processing package linux-signed-image-4.13.0-17-generic (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2017-11-22 (5 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
RelatedPackageVersions:
 dpkg 1.18.24ubuntu1
 apt 1.5.1
SourcePackage: linux-signed
Title: package linux-signed-image-4.13.0-17-generic 4.13.0-17.20 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to artful on 2017-11-23 (5 days ago)