Describe the bug
An error message appears when one launches the application while being offline

To Reproduce
Steps to reproduce the behavior:

1. Download the AppImage
2. Disconnect from the internet
3. Launch the AppImage

Expected behavior
Application runs

Screenshots
This is what happens if you launch the application on an offline machine:

Allusion version
1.0.0-rc5.4

Desktop OS
Linux

Additional context
Reference: AppImage/appimage.github.io#2632