Single test fails with BindingResolutionException after migrating to Laravel 8.x

I recently upgraded (with Laravel Shift) to Laravel 8.x and after tweaking a few of my tests, my entire test suite passes except for a single test with the following error:

There was 1 error:

1. Tests\Feature\UserProfileVerificationFeatureTest::an_admin_profile_will_be_verified_once_edited Illuminate\Contracts\Container\BindingResolutionException: Target class [web] does not exist.

[stack trace removed for brevity]

Caused by ReflectionException: Class web does not exist

[stack trace removed for brevity]

Failing Test

    /** @test */
    public function an_admin_profile_will_be_verified_once_edited()
    {
        $admin = $this->signIn(['admin', 'profile_not_verified']);
        // $admin = User::factory()->admin()->profileNotVerified()->create();
        // $this->actingAs($admin);

        $this->assertFalse($admin->profileIsVerified());

        $unverified_text = __('app.Profile Not Verified');

        $this->get(route('home'))    //<=== FAILS HERE
            ->assertOk()
            ->assertSeeText($unverified_text);

        Livewire::test(StaffAdminForm::class, ['staff' => $admin])
            ->call('submit')
            ->assertHasNoErrors()
            ->assertRedirect(route('staff.show', $admin))
            ->assertSessionHas('flash', $this->getSelfUpdateMessage());

        $admin = $admin->refresh();

        $this->assertTrue($admin->profileIsVerified());

        $this->get(route('home'))
            ->assertOk()
            ->assertDontSeeText($unverified_text);
    }

Passing Test (in same test class)

    /** @test */
    public function a_user_updating_their_unverified_profile_will_verify_it()
    {
        $user = $this->signIn('profile_not_verified');

        $this->assertFalse($user->profileIsVerified());

        $unverified_text = __('app.Profile Not Verified');

        $this->get(route('home'))
            ->assertOk()
            ->assertSeeText($unverified_text);

        Livewire::test(StaffForm::class, ['staff' => $user])
            ->call('submit')
            ->assertHasNoErrors()
            ->assertRedirect(route('staff.show', $user))
            ->assertSessionHas('flash', $this->getSelfUpdateMessage());

        $user = $user->refresh();

        $this->assertTrue($user->profileIsVerified());

        $this->get(route('home'))
            ->assertOk()
            ->assertDontSeeText($unverified_text);
    }

Any ideas why this is happening? The only difference is the parameters for the signIn() function, but I also tested passing an array to the passing test and it still passed, also in both cases the User is created successfully and the first $this->assertFalse($user->profileIsVerified() call passes without a problem. It's only when trying to visit the page that the BindingResolutionException is thrown.