При добавлении продукта в магазин ошибка FieldError at /admin/product/product/add/ Unknown field(s)

from django.conf import settings
from django.db import models
from django.contrib.auth.models import AbstractUser
from django.core.mail import send_mail
from django.urls import reverse
from django.utils.timezone import now
 
class Category(models.Model):
    name = models.CharField(max_length=200, db_index=True)
    slug = models.SlugField(max_length=200, unique=True)
 
    class Meta:
        ordering = ('name',)
        verbose_name = 'category'
        verbose_name_plural = 'categories'
 
    def __str__(self):
        return self.name
 
    
class Product(models.Model):
    category = models.ForeignKey(
        Category, related_name='products', on_delete=models.CASCADE
     )
    name = models.CharField(max_length=200, db_index=True)
    slug = models.SlugField(max_length=200, db_index=True)
    image = models.ImageField(upload_to='products/%Y/%m/%d', blank= True)
    description = models.TextField(blank=True)
    price = models.DecimalField(max_digits=10, decimal_places=2)
    available = models.BooleanField(default=True)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
 
    class Meta:
        ordering = ('name',)
        index_together = (('id', 'slug'),)
 
    def __str__(self):
        return self.name
 
            
class User(AbstractUser):
    image = models.ImageField(upload_to = 'users_images', null = True, blank = True)
    is_verified_email =  models.BooleanField(default = False)
 
 
class EmailVerification(models.Model):
    code = models.UUIDField(unique=True)
    user = models.ForeignKey(to=User, on_delete=models.CASCADE)
    created = models.DateTimeField(auto_now_add=True)
    expiration = models.DateTimeField()
 
    def __str__(self):
        return f'EmailVerification object for {self.user.email}'
 
    def send_verification_email(self):
        link = reverse('email_verification', kwargs={'email': self.user.email, 'code': self.code})
        verification_link = f'{settings.DOMAIN_NAME}{link}'
        subject = f'Подверждение учетной записи для {self.user.username}'
        message = 'Для подверждения учетной записи для {} перейдите по ссылке: {}'.format(
            self.user.email,
            verification_link
        )
        send_mail(
            subject=subject,
            message=message,
            from_email=settings.EMAIL_HOST_USER,
            recipient_list=[self.user.email],
            fail_silently=False,
        )
 
    def is_expired(self):
        return True if now() >= self.expiration else False

from django.contrib import admin
from .models import *
from .models import Category, Product
# Register your models here.
 
admin.site.register(User)
 
@admin.register(Category)
class CategoryAdmin(admin.ModelAdmin):
    list_display = ['name', 'slug']
    prepopulated_fields = {'slug':('name',)}
    
 
@admin.register(Product)
class ProductAdmin(admin.ModelAdmin):
    list_display = ['name', 'slug', 'price', 'available', 'created', 'updated']
    list_filter = ['available', 'created', 'updated']
    list_editable = ['price', 'available']
    prepopulated_fields = {'slug':('name',)}
    
 
@admin.register(EmailVerification)
class EmailVerificationAdmin(admin.ModelAdmin):
    list_display = ('code', 'user', 'expiration')
    fields = ('code', 'user', 'expiration', 'created')
    readonly_fields = ('created',)