Error when trying to create a feature using Opensoft/Rollout

I'm trying to get opensoft/rollout to work and I've added this to my bootstrap/app.php

if(!function_exists('rollout'))
{
    function rollout() : \Opensoft\Rollout\Rollout{
        return app('Opensoft\Rollout\Rollout');
    }
}

if(!function_exists('feature'))
{
  function feature(string $feature) : bool {
      return rollout()->isActive($feature, request()->user());
  }
}

And in my app/Providers/AppServiceProvider.php I have

$this->app->singleton('rollout', function(){
  $conn = DB::connection()->getPdo();
  $rollout = new Rollout(new PDOStorageAdapter ($conn));
});

and in my artisan command I have

$feature = rollout()->isActive('testing');
dd($feature);

and what happens is when I run my artisan command I get this error

Target [Opensoft\Rollout\Storage\StorageInterface] is not instantiable while building [Opensoft\Rollout\Rollout].