as of Laravel 5.5 fire() must be renamed to handle() (#705)
as of Laravel 5.5 fire() must be renamed to handle() (#705)

https://laravel.com/docs/5.5/upgrade

Artisan
The fire Method

Any fire methods present on your Artisan commands should be renamed to handle
barryvdh/laravel-debugbar,barryvdh/laravel-debugbar