crudのcreate機能実装中にformを送るとエラーになってしまいます

crudのcreate機能を実装中に詰まってしまいました

発生している問題・エラーメッセージ

Traceback (most recent call last):
  File "/Users/yoshihiro/.local/share/virtualenvs/mysite-xs0jetOT/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/Users/yoshihiro/.local/share/virtualenvs/mysite-xs0jetOT/lib/python3.8/site-packages/django/core/handlers/base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/Users/yoshihiro/Desktop/HBGB/mysite/notes/views.py", line 28, in note_create_send
    form.save()
  File "/Users/yoshihiro/.local/share/virtualenvs/mysite-xs0jetOT/lib/python3.8/site-packages/django/forms/models.py", line 452, in save
    raise ValueError(
ValueError: The Note could not be created because the data didn't validate.

該当のソースコード

python
1views.py
2from django.shortcuts import render, redirect
3from django.views import generic
4from .models import Note
5from .forms import NoteCreateForm
6
7def note_create(request):
8    context = {
9        'form': NoteCreateForm()
10    }
11    return render(request,'notes/note_create.html', context)
12
13def note_create_send(request):
14    form = NoteCreateForm(request.POST)
15    form.save()
16    return redirect('notes:note_home')

python
1urls.py
2
3from django.urls import path
4from . import views
5
6urlpatterns = [
7    path('',views.note_home,name='note_home'),
8    path('create',views.note_create,name='note_create'),
9    path('create/send/',views.note_create_send,name='note_create_send'),
10]

python
1forms.py
2
3from django import forms
4from .models import Note
5
6class NoteCreateForm(forms.ModelForm):
7
8    class Meta:
9        model = Note
10        fields = ['title','file','sub','grade','date']

python
1note_create.html
2
3{% block content %}
4<body bgcolor="#00ffff">
5  <form action="{% url 'notes:note_create_send' %}" method="POST" enctype="multipart/form-data">
6    {{ form.as_p }}
7    {% csrf_token %}
8    <button type="submit">送信</button>
9  </form>
10</body>        
11{% endblock %}