Snap install issues

root@SudsHub:~# sudo apt install snapd
Reading package listsā€¦ Done
Building dependency tree
Reading state informationā€¦ Done
snapd is already the newest version (2.20.1ubuntu1).
The following packages were automatically installed and are no longer required:
libappindicator1 libglade2-0 libindicator7 libpango1.0-0 libpangox-1.0-0
Use ā€˜sudo apt autoremoveā€™ to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@SudsHub:~# sudo snap install nextcloud
error: cannot communicate with server: Post http://localhost/v2/snaps/nextcloud: dial unix /run/snapd.socket: connect: connection refused
root@SudsHub:~# cat /etc/issue
Ubuntu 16.04.1 LTS \n \l

Any ideas?