Understanding Command Errror ALLOWED HOSTS DEBUG

Using Django Forms & APIs
1

I am getting the following error message. why is this?

settings.py

from .base import *

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = "django-insecure-!j2$*!67m*bpb77-@$=z_z)tj553$_*&3pe4vzu6cdk*qw)jd^"

ALLOWED_HOSTS = ["*", "localhost:8000"]

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
  
# Database
# https://docs.djangoproject.com/en/5.0/ref/settings/#databases

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql_psycopg2",
        "HOST": "localhost",
        # "HOST": "aws-0-us-west-1.pooler.supabase.com",
        "NAME": "postgres",
        "USER": "postgres",
        "PASSWORD": "postgres",
        # "USER": "postgres.qhvgpdhzebphqnybebkl",
        # "PASSWORD": "dfwpythoneers",
    }
}

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.0/howto/static-files/

STATIC_URL = "static/"

error message

Andrew@DESKTOP-CGDG53G MINGW64 ~/Desktop/django_projects/django_insurance (second_branch)
$ python manage.py runserver
CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False.
2

Remove the port from localhost.