Error: DISPLAY  environment variable is empty

When I attempt to run the application I get the following error

```
Error: DISPLAY environment variable is empty. Is there an Xorg or other X server running? You can try setting 'export DISPLAY=:0' and trying again.
mod:  "`"
Key added:  96
Segmentation fault (core dumped)
```

When I `echo $DISPLAY` it was already set to `:0`

I'm running arch linux (manjaro)