Comment 1 for bug 1835102

Same for me on Ubuntu 16.04.4 LTS

# sudo apt install snapd
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  squashfs-tools
Suggested packages:
  zenity | kdialog
The following NEW packages will be installed:
  snapd squashfs-tools
0 upgraded, 2 newly installed, 0 to remove and 21 not upgraded.
Need to get 13.1 MB of archives.
After this operation, 62.7 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://ubuntu.mirrors.ovh.net/ubuntu xenial-updates/main amd64 squashfs-tools amd64 1:4.3-3ubuntu2.16.04.3 [105 kB]
Get:2 http://ubuntu.mirrors.ovh.net/ubuntu xenial-updates/main amd64 snapd amd64 2.39.2ubuntu0.2 [13.0 MB]
Fetched 13.1 MB in 4s (2,657 kB/s)
Selecting previously unselected package squashfs-tools.
(Reading database ... 309635 files and directories currently installed.)
Preparing to unpack .../squashfs-tools_1%3a4.3-3ubuntu2.16.04.3_amd64.deb ...
Unpacking squashfs-tools (1:4.3-3ubuntu2.16.04.3) ...
Selecting previously unselected package snapd.
Preparing to unpack .../snapd_2.39.2ubuntu0.2_amd64.deb ...
Unpacking snapd (2.39.2ubuntu0.2) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Setting up squashfs-tools (1:4.3-3ubuntu2.16.04.3) ...
Setting up snapd (2.39.2ubuntu0.2) ...
md5sum: /etc/apparmor.d/usr.lib.snapd.snap-confine: No such file or directory
snapd.failure.service is a disabled or a static unit, not starting it.
snapd.snap-repair.service is a disabled or a static unit, not starting it.