Test "assertSeeLivewire" not working properly

I am following the "buiild a voting app" course. I have built many tests already, but suddenly I ran into problems and I can't understand why.

Typically when I have a assertion like this:

        $this->actingAs($user)
            ->get(route('idea.show', $idea))
            ->assertSeeLivewire('edit-comment');

I get the error message (when running the test):

  at C:\Projects\htdocs\lc-voting\vendor\livewire\livewire\src\LivewireServiceProvider.php:183
    179▕
    180▕             \PHPUnit\Framework\Assert::assertStringContainsString(
    181▕                 $escapedComponentName,
    182▕                 $this->getContent(),
  ➜ 183▕                 'Cannot find Livewire component ['.$component.'] rendered on page.'
    184▕             );
    185▕
    186▕             return $this;
    187▕         });

  1   C:\Projects\htdocs\lc-voting\vendor\laravel\framework\src\Illuminate\Macroable\Traits\Macroable.php:124
      Illuminate\Testing\TestResponse::Livewire\{closure}("edit-comment")

  2   C:\Projects\htdocs\lc-voting\tests\Feature\Comments\DeleteCommentTest.php:27
      Illuminate\Testing\TestResponse::__call("assertSeeLivewire")

All my test which use assertSeeLivewire have this problem, while they were functioning properly before.

Any suggestions?