package cups 2.2.7-1ubuntu2 failed to install/upgrade: dependency problems - leaving triggers unprocessed

[Bereket Abera]

error at the start of the pc

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: cups 2.2.7-1ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
AptOrdering:
 cups-filters:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CupsErrorLog:

Date: Wed Aug 7 06:58:27 2019
ErrorMessage: dependency problems - leaving triggers unprocessed
InstallationDate: Installed on 2019-07-30 (9 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
Lpstat: device for HP_LaserJet_400_M401dn_817E04_: ipp://ZXDSL83C1II.local:631/ipp/print
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 413c:301a Dell Computer Corp.
 Bus 001 Device 002: ID 413c:2113 Dell Computer Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. OptiPlex 3050
Papersize: letter
PpdFiles: HP_LaserJet_400_M401dn_817E04_: LaserJet 400 M401dn
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=4551de30-9a56-4e58-a09d-4b13f33a67fb ro quiet splash vt.handoff=1
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=4551de30-9a56-4e58-a09d-4b13f33a67fb ro quiet splash vt.handoff=1
Python3Details: /usr/bin/python3.6, Python 3.6.8, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python2.7, Python 2.7.15+, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: cups
Title: package cups 2.2.7-1ubuntu2 failed to install/upgrade: dependency problems - leaving triggers unprocessed
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/08/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.4.4
dmi.board.name: 0W0CHX
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.4.4:bd05/08/2017:svnDellInc.:pnOptiPlex3050:pvr:rvnDellInc.:rn0W0CHX:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.family: OptiPlex
dmi.product.name: OptiPlex 3050
dmi.sys.vendor: Dell Inc.