django model no column error in a field with foreign key

Question

I have custom user model

class User(AbstractUser):  
     model fields 

and another model which has a field with foreign key relation to User

class Comment(models.Model):
    writer = models.ForeignKey(User,on_delete=models.CASCADE,null=True,related_name='comment_writer')
    contents = models.TextField(max_length=300,null=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

but when I makemigrations and migrate the app and the project, I still get error message at the admin page

OperationalError at /admin/User/comment/ no such column: User_comment.writer_id Request Method: GET Request URL: http://localhost:8000/admin/User/comment/ Django Version: 2.2.3 Exception Type: OperationalError Exception Value:
no such column: User_comment.writer_id Exception Location: /usr/local/lib/python3.6/dist-packages/django/db/backends/sqlite3/base.py in execute, line 383 Python Executable: /usr/bin/python3 Python Version: 3.6.9 Python Path:
['/home/potentad/Documents/timesello', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/home/potentad/.local/lib/python3.6/site-packages', '/usr/local/lib/python3.6/dist-packages', '/usr/local/lib/python3.6/dist-packages/onedrived-2.0.0-py3.6.egg', '/usr/local/lib/python3.6/dist-packages/zgitignore-1.0.0-py3.6.egg', '/usr/local/lib/python3.6/dist-packages/tabulate-0.8.7-py3.6.egg', '/usr/local/lib/python3.6/dist-packages/psutil-5.7.0-py3.6-linux-x86_64.egg', '/usr/lib/python3/dist-packages'] Server time: Fri, 22 May 2020 23:20:23 +0000

What's wrong and what should I do ?

Answer 1

Can you run this lines

python manage.py makemigrations

after

python manage.py migrate