snaps do not run because of cgroup problem

[Edward Schwartz]

No snaps run correctly on my system:

 ed  ~  hello-world
ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (failed to map segment from shared object): ignored.
cannot open cgroup hierarchy /sys/fs/cgroup/freezer: Not a directory

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: snapd 2.40+18.04
ProcVersionSignature: Ubuntu 4.15.0-64.73-generic 4.15.18
Uname: Linux 4.15.0-64-generic x86_64
NonfreeKernelModules: openafs nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Wed Oct 2 08:52:19 2019
InstallationDate: Installed on 2016-09-13 (1113 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: snapd
UpgradeStatus: Upgraded to bionic on 2018-08-21 (406 days ago)

[Zygmunt Krynicki (zyga)]

Hello

Can you please provide the output of the following two commands:

cat /proc/self/mountinfo

cat /proc/cmdline

[Launchpad Janitor (janitor)]

[Expired for snapd because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for snapd (Ubuntu) because there has been no activity for 60 days.]