outline-apps: Error "Outline is not properly installed" on Linux

Describe the bug Outline won’t connect to a Shadowsocks server, showing an error that says Sorry, it looks like Outline is not properly installed. Please try installing it again, If that doesn't work, please submit feedback through the app

To Reproduce

• Download the GNU/Linux .AppImage version 1.3
• Run the application
• Add any ss:// server
• Click on Connect

Expected behavior Application creates a VPN connection.

Screenshots

Client System (please complete the following information):

• Outline Client Version : 1.3
• Your Operating System: Solus OS 4.2 (Also tried on Linux Mint 19.3, same results)

Submit Feedback Please submit feedback through the app and label it with this issue number.

Additional context Here’s the Terminal output when I execute the AppImage from there:

WINDOW DECORATIONS RELOADED
loading web app from file:///tmp/.mount_OutlinKT77tk/resources/app.asar/www/electron_index.html?appName=Outline
(node:1536) electron: The default of contextIsolation is deprecated and will be changing from false to true in a future release of Electron.  See https://github.com/electron/electron/issues/23506 for more information
Could not load active tunnel:  [Error: ENOENT: no such file or directory, open '/home/USERNAME/.config/Outline/connection_store'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: '/home/USERNAME/.config/Outline/connection_store'
}
Checking for update
Generated new staging user ID: 1c1735c6-e653-5302-a0cf-9931b6ae6532
Update for version 1.3.0 is not available (latest version: 1.3.0, downgrade is disallowed).
(electron) Sending uncompressed crash reports is deprecated and will be removed in a future version of Electron. Set { compress: true } to opt-in to the new behavior. Crash reports will be uploaded gzipped, which most crash reporting servers support.
Outline is starting
connecting to 1ddfe7ba-5405-4762-afad-5f556149fd44...
(node:1536) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
UDP support: true
(re-)installing routing daemon
copying service files to /tmp/Dk78Rj
[EXIT - badvpn-tun2socks]: Exited with code 1
a helper has exited, disconnecting
could not stop routing: Cannot call write after a stream was destroyed
[EXIT - ss-local]: Exited with code 0
Promise "DNS lookup" resolved before 10000 ms.
could not connect: h (routing daemon is not running)
^Ccould not stop routing: Cannot call write after a stream was destroyed
could not stop routing: Cannot call write after a stream was destroyed
Terminated