Cascade Soft Deletes: Soft-Delete Children Automatically

Grate course trying to work with the dyrynda Laravel cascade soft deletes 4.3 however when I tune the phpUnit test I get the following Error:

 
   FAIL  Tests\Feature\ProfileTest
  ✓ profile page is displayed                                                                          0.04s
  ✓ profile information can be updated                                                                 0.03s
  ✓ email verification status is unchanged when the email address is unchanged                         0.03s
  ⨯ user can delete their account                                                                      0.35s
  ✓ correct password must be provided to delete account                                                0.08s
  ──────────────────────────────────────────────────────────────────────────────────────────────────────────
   FAILED  Tests\Feature\ProfileTest > user can delete their account
  Expected response status code [201, 301, 302, 303, 307, 308] but received 500.
Failed asserting that false is true.
 
The following exception occurred during the last request:
 
Dyrynda\Database\Support\CascadeSoftDeleteException: Relationship [companies] must exist and return an object
of type Illuminate\Database\Eloquent\Relations\Relation in C:\xampp\htdocs\imr\ironmanrecycling\vendor\dyrynda
\laravel-cascade-soft-deletes\src\CascadeSoftDeleteException.php:18
 
 
 
Relationship [companies] must exist and return an object of type Illuminate\Database\Eloquent\Relations\Relati
on
 
  at tests\Feature\ProfileTest.php:76
     72▕             ]);
     73▕
     74▕         $response
     75▕             ->assertSessionHasNoErrors()
  ➜  76▕             ->assertRedirect('/');
     77▕
     78▕         $this->assertGuest();
     79▕         $this->assertSoftDeleted($user->fresh());
     80▕     }
 
 
  Tests:    1 failed, 25 passed (55 assertions)
  Duration: 3.35s

Any suggestions? Ps The soft delete did work befor I changed to this CascadeSoftDeletes.