I trying to create email sender but i get an error when i want to import Product
ImportError: cannot import name ‘Product’ from ‘models’

from fastapi import FastAPI
from models import Product

#email
from fastapi import BackgroundTasks, UploadFilem, File, Form
from fastapi_mail import FastMail, MessageSchema, ConnectionConfig
from pydantic import EmailStr, BaseModel
from typing import List


app = FastAPI()


class EmailSchema(BaseModel):
    email: List[EmailStr]

class EmailContent(BaseModel):
    message: str
    subject: str


@app.post("email/{product_id}")
async def send_email(product_id: int, content: EmailContent):
    
    product = await Product.get(id = product_id)
    supplier = await product.supplied_by
    supplier_email = [supplier.email]

    html = f"""
        """

    message = MessageSchema(
            subject=content.subject,
            recipients=supplier_email,
            body=html,
            subtype="html"
            )
        
    fm = FastMail(conf)
    await fm.send_message(message)
    return {"status": "OK"}

fix an error ImportError: cannot import name ‘Product’ from ‘models’