GLib.Error from manual install

[SamuelWN]

Describe the bug
After encountering the make_ovpn_template issue installing from the pip3 repo, I tried manual install method, but encountered the following error on launch:

Traceback (most recent call last):
  File "/usr/local/bin/protonvpn-gui", line 11, in <module>
    load_entry_point('protonvpn-gui', 'console_scripts', 'protonvpn-gui')()
  File "/home/samuelwn/Downloads/linux-gui/linux_gui/protonvpn_gui.py", line 66, in init
    style_provider.load_from_path(UI_STYLES)
GLib.Error: gtk-css-provider-error-quark: common.css:51:20'-gtk-icon-effect' is not a valid property name (3)

To Reproduce
Steps to reproduce the behavior:

sudo apt install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0 gir1.2-appindicator3 libnotify-bin
git clone https://github.com/ProtonVPN/linux-gui.git
cd linux-gui
sudo pip3 install -e .
sudo protonvpn-gui

Expected behavior
ProtonVPN GUI to launch

Desktop:

• OS: Ubuntu 16.04

Additional context
The manually-installed version gives an error during uninstallation that I did not encounter when installing from the pip repository, though I think it might make sense to make it a separate report.

$ sudo pip3 --verbose uninstall protonvpn-gui 
WARNING: The directory '/home/samuelwn/.cache/pip' or its parent 
    directory is not owned or is not writable by the current user. 
    The cache has been disabled.
    Check the permissions and owner of that directory.
    If executing pip with sudo, you may want sudo's -H flag.
Found existing installation: protonvpn-gui 2.1.0
Not sure how to uninstall: protonvpn-gui 2.1.0 - Check: /home/samuelwn/Downloads/linux-gui
Can't uninstall 'protonvpn-gui'. No files were found to uninstall.

$ sudo pip3 show protonvpn-gui
WARNING: The directory '/home/samuelwn/.cache/pip' or its parent 
    directory is not owned or is not writable by the current user. 
    The cache has been disabled.
    Check the permissions and owner of that directory.
    If executing pip with sudo, you may want sudo's -H flag.
Name: protonvpn-gui
Version: 2.1.0
Summary: Linux GUI client for ProtonVPN
Home-page: https://github.com/ProtonVPN/linux-gui
Author: Proton Technologies AG
Author-email: contact@protonvpn.com
License: GPLv3
Location: /home/samuelwn/Downloads/linux-gui
Requires: protonvpn-cli, requests
Required-by: 

(executing with sudo -H does not resolve the issue and produces the same error)

[SamuelWN]

After manually uninstalling proton-gui and reverting my protonvpn-cli instance to version 2.2.2, I got a new, different, GLib error which may point to the issue:

Traceback (most recent call last):
  File "/usr/local/bin/protonvpn-gui", line 8, in <module>
    sys.exit(initialize_gui())
  File "/usr/local/lib/python3.5/dist-packages/protonvpn_linux_gui/gui.py", line 738, in initialize_gui
    interface.add_from_file(glade_path[:-1])
GLib.Error: gtk-builder-error-quark: /usr/local/lib/python3.5/dist-packages/protonvpn_linux_gui/resources/main.glade:26:1 Required gtk+ version 3.20, current version is 3.18 (7)

Required gtk+ version 3.20, current version is 3.18

[calexandru2018]

sudo protonvpn-gui this is your problem if you install it via Github. Please follow the instructions in the readme file.

To install: sudo pip3 install -e .

To launch: protonvpn-gui

Once you get this solved, please close the issue :)

[SamuelWN]

Unfortunately, running as a standard user produces the same result.

$ protonvpn-gui 
Traceback (most recent call last):
  File "/usr/local/bin/protonvpn-gui", line 11, in <module>
    load_entry_point('protonvpn-gui', 'console_scripts', 'protonvpn-gui')()
  File "/home/samuelwn/Downloads/linux-gui/linux_gui/protonvpn_gui.py", line 66, in init
    style_provider.load_from_path(UI_STYLES)
GLib.Error: gtk-css-provider-error-quark: common.css:51:20'-gtk-icon-effect' is not a valid property name (3)

[calexandru2018]

Thanks for the info @SamuelWN

Based on you previous post, it is not the exact error. This time a property is being flagged as not valid, which is weird since by GTK+ docs, this property should be supported by GTK3 v3.18. I will try to recreate the issue with Ubuntu 16.04.

[SamuelWN]

No prob.

And sorry, my last comment may've been a bit confusing.
What I meant was that running the GitHub version of the GUI (with protonvpn-cli v2.2.4) produced the same error message with / without sudo (the error message matches the one I quoted in the "Describe the bug" section of the original post).

The error in my earlier comment was the produced by reverting protonvpn-cli to v2.2.2 and attempting to use the pip3 repo version of the gui.

Sorry for any confusion.

[calexandru2018]

Hi again @SamuelWN

I tried to replicate the issue and I can confirm it. Now the thing is, the GUI is based on GTK+3.22, and this version of GTK is only supported from Ubuntu 18.04 bionic and higher. I tried to search and see if the newer GTK version could be installed in Ubuntu 16.04, but only GTK+3.20 is supported, meaning that if you want to use the GUI you will need to upgrade to Ubuntu 18.04 bionic.

As it is at the moment, there are no plans to support older versions of Ubuntu, although that might possibly change in the future.

[SamuelWN]

OK, good to know it wasn't just my computer being weird.

Yeah, it'd honestly be a little silly, IMO, to spend time & effort backporting to an OS that's approaching EOL in less than a year (2021-04).

Thanks for your help!