Event appears to be creating a duration with only time_end populated

[ultrablue]

devilbox@php-8.2.0-dev in /shared/httpd/sillaj-l/sillaj-l $ php artisan tinker
Psy Shell v0.11.18 (PHP 8.2.0-dev — cli) by Justin Hileman
> $e = App\Event::factory()->make(['user_id'=>1,'task_id'=>1,'project_id'=>1, 'time_end' => ''])
= App\Event {#7290
    user_id: 1,
    time_start: "19:15:09",
    time_end: "",
    duration: "PT2H",
    event_date: "2023-06-18",
    note: "Maxime libero est illo corporis occaecati tempore tempora. Voluptatem quia commodi fugiat hic vel. Similique dolores inventore voluptatem maxime repudiandae qui non. Aut qui tempora vel mollitia mollitia sunt. Itaque aut eum voluptatibus quod est eveniet ea.",
    task_id: 1,
    project_id: 1,
  }

[ultrablue]

It might be something with the Factory.