package menu 2.1.47ubuntu2 [origin: Ubuntu] failed to install/upgrade: dependency problems - leaving triggers unprocessed

hundreds / thousands of error
GTK WARNING THEME PARSING ERROR gtk.css (number) isnot a number

this during upgrade from v17 to v18

ProblemType: Package
DistroRelease: Ubuntu Kylin 18.04
Package: menu 2.1.47ubuntu2 [origin: Ubuntu]
ProcVersionSignature: Ubuntu 4.13.0-39.44-lowlatency 4.13.16
Uname: Linux 4.13.0-39-lowlatency x86_64
NonfreeKernelModules: wl nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Thu May 10 15:13:18 2018
Dependencies:
 gcc-8-base 8-20180414-1ubuntu2 [origin: Ubuntu]
 libc6 2.27-3ubuntu1 [origin: Ubuntu]
 libgcc1 1:8-20180414-1ubuntu2 [origin: Ubuntu]
 libstdc++6 8-20180414-1ubuntu2 [origin: Ubuntu]
ErrorMessage: dependency problems - leaving triggers unprocessed
InstallationDate: Installed on 2017-09-22 (230 days ago)
InstallationMedia: It
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: menu
Title: package menu 2.1.47ubuntu2 [origin: Ubuntu] failed to install/upgrade: dependency problems - leaving triggers unprocessed
UpgradeStatus: No upgrade log present (probably fresh install)