我无法让 snap 在 Ubuntu 16.04 vps 上运行。尝试安装时，我收到以下输出：
The following NEW packages will be installed:
snapd
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 13.2 MB of archives.
After this operation, 65.2 MB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 snapd amd64 2.42.1 [13.2 MB]
Fetched 13.2 MB in 2s (5204 kB/s)
Selecting previously unselected package snapd.
(Reading database ... 71733 files and directories currently installed.)
Preparing to unpack .../snapd_2.42.1_amd64.deb ...
Unpacking snapd (2.42.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.2) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up snapd (2.42.1) ...
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.
当我尝试安装 hello-world snap 时，出现了这个错误：
snap install hello-world
error: system does not fully support snapd: cannot mount squashfs image using
"squashfs": mount: /tmp/sanity-mountpoint-948900179: mount failed:
Unknown error -1
我到处寻找解决方案，但却无法找到。