Permission denied reading zotero.sqlite (Snap)

[niveK77pur]

Hello, I have been setting up Zotero and stumbled upon this neat companion app. I installed both Zotero and qnotero via Snap. However, I get the following error (exert from the end of the output). It appears after I specify the Zotero folder and makes the app crash right away.

To be noted:

• Auto-detect did not work. I want to suspect the snap sandboxing between both apps being the reason.
• When doing Browse I had to manually type in the path because the folders in question would not show up (~/snap/zotero-snap shows up fine but anything after that is hidden). I attached a screenshot in case I messed something up in the input.
  

Using Python 3.6.9 (default, Nov 25 2022, 14:10:45)
[GCC 8.4.0]
Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 4: unknown element "its:rules"
Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: unknown element "its:translateRule"
Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: invalid attribute 'translate'
Fontconfig error: "/etc/fonts/conf.d/10-hinting-slight.conf", line 5: invalid attribute 'selector'
# ... more "Fontconfig" lines ...
Fontconfig error: "/etc/fonts/conf.d/90-synthetic.conf", line 6: invalid attribute 'xmlns:its'
Fontconfig error: "/etc/fonts/conf.d/90-synthetic.conf", line 6: invalid attribute 'version'
libqnotero._themes.light.__init__(): using '/usr/share/qnotero/resources/light'
libzotero._noteProvider.gnoteProvider: failed to import Levenshtein
qnotero.reInit(): using GnoteProvider
libgnote.__init__(): failed to locate Gnote
libzotero.__init__(): zotero_path = b'/home/kuni/snap/zotero-snap/common/Zotero'
[Errno 13] Permission denied: '/home/kuni/snap/zotero-snap/common/Zotero/zotero.sqlite'
pci id for fd 11: 1002:164c, driver (null)
libGL error: failed to create dri screen
libGL error: failed to load driver: radeonsi
pci id for fd 11: 1002:164c, driver (null)
libGL error: failed to create dri screen
libGL error: failed to load driver: radeonsi
sysTray.activate(): Activating qnotero reason: 1
sysTray.activate(): Exiting wthout activate Qnotero
saving!
libqnotero._themes.light.__init__(): using '/usr/share/qnotero/resources/light'
qnotero.reInit(): using GnoteProvider
libgnote.__init__(): failed to locate Gnote
libzotero.__init__(): zotero_path = b'/home/kuni/snap/zotero-snap/common/Zotero'
[Errno 13] Permission denied: '/home/kuni/snap/zotero-snap/common/Zotero/zotero.sqlite'
Traceback (most recent call last):
  File "/snap/qnotero/196/lib/python3.6/site-packages/libqnotero/preferences.py", line 114, in accept
    self.qnotero.zotero.update(True)
  File "/snap/qnotero/196/lib/python3.6/site-packages/libzotero/libzotero.py", line 261, in update
    shutil.copyfile(self.zotero_database, self.gnotero_database)
  File "/snap/qnotero/196/usr/lib/python3.6/shutil.py", line 120, in copyfile
    with open(src, 'rb') as fsrc:
PermissionError: [Errno 13] Permission denied: '/home/kuni/snap/zotero-snap/common/Zotero/zotero.sqlite'
Aborted

The file in question is definitely there:

$ ll /home/kuni/snap/zotero-snap/common/Zotero/zotero.sqlite
-rw-r--r-- 1 kuni kuni 2383872 Mar 10 15:19 /home/kuni/snap/zotero-snap/common/Zotero/zotero.sqlite

I imagine this must be some Snap related issue because from what I see the zotero.sqlite file is readable by everyone (unless I am overlooking something very silly here).

When I launch qnotero again after the error, the sys tray icon actually appears and it seems that I can interact with it just fine. However, no results are being shown (which is probably because it cannot read the sqlite file).

[ealbiter]

Hi. Indeed, this is a known issue related to snap confinement. The only workaround I found at the moment was to install Qnotero in development mode using this command:

sudo snap install qnotero --devmode

Have you tried this?