AppArmor initialization Failed, computer not starting

When I start my computer, the following message appears then nothing else happens.

/dev/sda1: clean, 2013302/58957824 files, 114215880/235816448 blocks
[FAILED] Failed to start LSB: AppArmor initialization.
See 'Systemct1 status apparmor.service' for details.
    Mounting Arbitrary Executable File Formats File System...
[ OK ] Started udev Coldplug all Devices.
     Starting Show Plymouth Boot screen...
[ OK ] Started Flush Journal to Persistent Storage.
    Starting Create Volatile Files and Directories...
[ OK ] Mounted Arbitrary Executable File Formats System.
[ OK ] Listening on Load/Save RF Kill switch Status /dev/rfkill Watch.
[ OK ] Started clean up any mess keft by 0dns-up.
    Starting Nameserver information manager...
[ OK ] Started Enable support for additional executable binary formats.
---
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CasperVersion: 1.376.2
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
LiveMediaBuild: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
Package: apparmor 2.10.95-0ubuntu2.6
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdline: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Syslog: Sep 17 13:03:04 ubuntu dbus[1344]: [system] AppArmor D-Bus mediation is enabled
Tags: xenial
Uname: Linux 4.10.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CasperVersion: 1.376.2
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
LiveMediaBuild: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
Package: apparmor 2.10.95-0ubuntu2.6
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdline: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Syslog: Sep 17 13:03:04 ubuntu dbus[1344]: [system] AppArmor D-Bus mediation is enabled
Tags: xenial
Uname: Linux 4.10.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True