# Laravel Horizon Zero Processes Running

I just spent the past two hours trying to figure out why my latest deployment to our dev environment didn't have any Horizon queue workers running. I finally figured out my issue, so here's a lil write up in case you are experiencing the same.

At [SafetyTek](https://safetytek.io) we are running two queue servers, one for `production` and one for our `dev` environment. Both had been working fine up until today when I was making some changes.

Earlier in the day I had adjusted the `.env` file of our dev environment to have `APP_ENV=dev` instead of `APP_ENV=production` so that we can disable certain production-only loggers. 

At some point after this I was bouncing around our application and noticed that certain actions weren't happening so I decided to hop into the horizon dashboard to see a backlog of jobs and no processes running to consume those jobs.

I spent hours editing configs, hunting down logs, rebooting the server, restarting processes.

As it turns out, in `config/horizon.php` there is a configuration key called `environments` that allows you to configure certain process settings based on the `APP_ENV` you have set.

So our production one was still working fine since the `production` environment was configured here, but since there was no `dev` key it reads that as "don't start any processes".

The fix is just adding a key for whatever your `APP_ENV` is set to

```
'environments' => [
  'production' => [
    'supervisor-1' => [
      'maxProcesses' => 10,
      'balanceMaxShift' => 1,
      'balanceCooldown' => 3,
    ],
  ],

  'dev' => [
    'supervisor-1' => [
      'maxProcesses' => 10,
      'balanceMaxShift' => 1,
      'balanceCooldown' => 3,
    ],
  ],

  'local' => [
    'supervisor-1' => [
      'maxProcesses' => 3,
    ],
  ],
]
```

Hopefully this saves someone else a headache!