How do you get past "snap kde-frameworks-5" issue to run Okular?

Question

On Ubuntu 16.04 I used the Software application to install Okular. It did not show up in the dash. So I went to a terminal to start it. I got this messsage:

You need to connect this snap to the kde-frameworks-5 snap.

You can do this with those commands:
snap install kde-frameworks-5
snap connect okular:kde-frameworks-5-plug kde-frameworks-5:kde-frameworks-5-slot

I ran the "snap install kde-frameworks-5" command and it appears to have worked. If I re-run it (due to Okular continuing to tell me to) I get:

snap "kde-frameworks-5" is already installed, see "snap refresh
--help"

Running the "snap connect ..." command does not give a similar message. It appears to toggle it's output slightly. One time:

[/] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl
[-] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl
[\] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl
[|] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl

another:

[/] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl
[-] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl
[\] Connect okular:kde-frameworks-5-plug to kde-frameworks-5:kde-frameworks-5-sl

But trying to start Okular just keeps giving me the original message that I need to download and connect.

Answer 1

You should run both commend with root user or sudo

sudo snap install kde-frameworks-5
sudo snap connect okular:kde-frameworks-5-plug kde-frameworks-5:kde-frameworks-5-slot

I got same issue that running okular asking me to do that. I checked snap interfaces | grep okular and it seems good:

:home                                   okular
:network                                okular
:network-bind                           core,okular
:opengl                                 okular
:pulseaudio                             okular
:unity7                                 okular
:x11                                    okular
kde-frameworks-5:kde-frameworks-5-slot  okular:kde-frameworks-5-plug
okular:session-dbus-interface

So I reinstalled okular left kde-frameworks-5 installed. Now it works fine:

sudo snap remove okular
sudo snap install okular

It seems to me a bug, if you are interested please report it against snapd package.