Illuminate\Contracts\Container\BindingResolutionException Target class [config] does not exist.

I'm getting this error when I try to run a PHPUnit test that use model factories

use App\Models\Post;
use App\Models\Channel;

class ChannelTest extends TestCase
{
    use RefreshDatabase;

    /** @test */
    public function a_channel_has_many_posts() 
    {
        //$user ChannelCategory::factory()->create()->id;
        $channel = Channel::factory()->create();
        $post = Post::factory()->create(['channel_id' => $channel->id]);

        $this->assertTrue($channel->posts->contains($post));
    }
}

I've read in other threads to setup and teardown in the TestCase:

<?php

namespace Tests;

use Illuminate\Foundation\Testing\TestCase as BaseTestCase;

abstract class TestCase extends BaseTestCase
{
    use CreatesApplication;

    public function setUp(): void
    {
        parent::setUp();
    }

    public function tearDown(): void
    {
        parent::tearDown();
    }
}

I've also php artisan config:clear and php artisan cache:clear with no luck. I did have to change the Tests name from Channel to ChannelTest not sure if that did something.

After doing all of this I'm still getting:

 • Tests\Unit\ChannelTest > a channel has many posts
   Illuminate\Contracts\Container\BindingResolutionException 

  Target class [config] does not exist.

  at vendor/laravel/framework/src/Illuminate/Container/Container.php:877
    873▕ 
    874▕         try {
    875▕             $reflector = new ReflectionClass($concrete);
    876▕         } catch (ReflectionException $e) {
  ➜ 877▕             throw new BindingResolutionException("Target class [$concrete] does not exist.", 0, $e);
    878▕         }
    879▕ 
    880▕         // If the type is not instantiable, the developer is attempting to resolve
    881▕         // an abstract type such as an Interface or Abstract Class and there is

      +6 vendor frames 
  7   database/factories/ChannelFactory.php:21
      fake()

      +7 vendor frames 
  15  tests/Unit/ChannelTest.php:30
      Illuminate\Database\Eloquent\Factories\Factory::create()