- Добавить в тег form
enctype="multipart/form-data"
<form action="{{route('upload-image')}}" method="post" enctype="multipart/form-data">
- У тега input добавить
name
<input name="image" type="file">
В контроллере проверяем с помощью $request->all()
<form action="{{route('upload-image')}}" method="post" class="m-3" enctype="multipart/form-data">
{{ csrf_field() }}
<label for="image">Image</label>
<br>
<input name="image" id="image" type="file">
<br>
<button class="btn btn-success mt-1" type="submit">Создать</button>
</form>