Issue with Django only some links work?

[card51shor]

they're in a Django database that I have written in the Models.py file.

Here they are:

from django.contrib.auth.models import AbstractUser
from django.db import models


class User(AbstractUser):
    pass

class NewPost(models.Model):
    title = models.CharField(max_length=64)
    description = models.CharField(max_length=64)
    price = models.IntegerField()
    category = models.CharField(max_length=64)

class Bid():
    pass

class Comment():
    pass