caffeinated / themes

Hi,

I've create 2 themes for backend for Admin section and frontend for Frontend+User (default theme). But since then, every time I open the web or run route:list from artisan, I've got error saying Undefined variable: themeLocation.

    $ php artisan route:list
    In RegistersViewLocations.php line 34:
    
    Undefined variable: themeLocation

Env: Laravel 5.5, caffeinated/theme 4.0

themes/src/Traits/RegistersViewLocations.php

Line 34 in 5dea58e

app('view.finder')->removeLocation($themeLocation);

Strange, when I open the web, the error is gone. But if I try to run route:list, the error still there.