http test will crash when attempting to send email

I keeping getting an error response when the http test whenever the endpoint I am testing attempts to send an email.

public function testBasicTest () { $faker = \Faker\Factory::create();

error_log('faker details -->');
error_log($faker->name);
error_log($faker->unique()->email);

// http test -------->

$response = $this->json('POST', 'api/customRegister',
  [
    'name' => $faker->name,
    'email' => $faker->unique()->email,
    'password' => $faker->password
]);

error_log(json_encode($response->original,true));

$response->assertStatus(200);

}

// endpoint ------>

$when = Carbon\Carbon::now()->addMinutes(1);

\Mail::to($user)->later($when, new EmailConfirmation($user)); \Mail::to('connorlloydmoore@gmail.com')->later($when, new EmailConfirmation($user));