Comment 4 for bug 1571721

@adconrad The update does not fix the issue, at least it does not if the installation already is wrecked:

[timwolla@~ [1]]dpkg -l 'snapd'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=================================
ii snapd 2.0.3 amd64 Tool to interact with Ubuntu Core
[timwolla@~]sudo snap remove xkcd-webserver
error: cannot remove "xkcd-webserver": cannot find mounted snap "xkcd-webserver" at revision 15
[timwolla@~ [1]]sudo snap install xkcd-webserver
error: cannot install "xkcd-webserver": snap "xkcd-webserver" already installed