Error: Call to a member function delete() on null

I'm encountering an issue in my Laravel application and I could use some assistance in resolving it. I'm attempting to delete a record using a form in Laravel, and I keep getting the "Call to a member function delete() on null" error.

Here's how my code is structured:

Route Definition:

Route::delete('/hapus-persalinan/{id}', [PersalinanController::class, 'hapusPersalinan'])->name('hapusPersalinan');

Controller Method:

public function hapusPersalinan($id)
{
    $persalinan = Persalinan::find($id);

    $persalinan->delete();

    return redirect()->back();
}

View Code:

<form method="POST" action="{{ route('hapusPersalinan', $id) }}" style="display: inline-block;">
                                @csrf
                                @method('DELETE')
                                <button type="submit" class="btn btn-secondary">
                                    <i class="fa fa-trash"></i>
                                </button>
                            </form>

I expect the record to be deleted upon submitting the form, but instead, I'm encountering the "Call to a member function delete() on null" error.

Any insights or suggestions would be greatly appreciated.