Laravel test if the response contains errors?

I'm working on a legacy code and trying to use tests to cover the code for later refactoring. In one controller there's a piece of code like this:

return redirect()->route('login')->withErrors(['invalid credentials']);

Here are my assertions for the test:

$response->assertRedirect(route('login'));
$response->assertSessionHasErrors([
    0 => 'invalid credentials'
]);

But the problem is I get the following output:

Session missing error: 'invalid credentials'
Failed asserting that false is true.

Any idea how can I get this done?