[Django]-How to fix: "RuntimeWarning: Model <my_model> was already registered."

Exactly the same problem had happened to me. The problem was that I had defined a model twice! Removing one of them solved the problem.

Check in your models if you don’t got a duplicate class model, sometimes when we make a rebase or merge in our existing branches, our code can be duplicated, i had the same problem, isn’t a big deal.

I got the same error when mistakenly defining 2 of the same name models(classes) in "models.py" as shown below:

# "models.py"

from django.db import models

class Product(models.Model):
    name = models.CharField(max_length=100)

class Product(models.Model):
    title = models.CharField(help_text=_("Required"), max_length=200)

I have gotten this error because of automatic imports I had in my __init__.py. I had some old code that imported by signals there, and moving that import code to AppConfig instead fixed it.

It is saying that you have already registered the model before
Hence by deleting the second model or writing the code in the specified model is the solution for this .