マイグレートのエラー

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

class CustomUser(AbstractUser):
    # 追加のユーザーフィールドを定義
    # 例: profile_picture = models.ImageField(upload_to='profile_pics/', null=True, blank=True)
    pass

class Char_Script(models.Model):
    char = models.CharField(max_length=100)
    user = models.ForeignKey(CustomUser, on_delete=models.CASCADE)  # ForeignKeyでCustomUserとの関連を表現
    nickname = models.CharField(max_length=100)
    quote = models.CharField(max_length=100)

    class Meta:
        db_table = 'char'

    def __str__(self):
        return self.char

# Generated by Django 5.0.1 on 2024-02-08 06:10

import django.contrib.auth.models
import django.contrib.auth.validators
import django.db.models.deletion
import django.utils.timezone
from django.conf import settings
from django.db import migrations, models


class Migration(migrations.Migration):

    dependencies = [
        ('auth', '0012_alter_user_first_name_max_length'),
        ('fb_app', '0002_char_script_nickname_char_script_quote'),
    ]

    operations = [
        migrations.CreateModel(
            name='CustomUser',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('password', models.CharField(max_length=128, verbose_name='password')),
                ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
                ('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=150, unique=True, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username')),
                ('first_name', models.CharField(blank=True, max_length=150, verbose_name='first name')),
                ('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
                ('email', models.EmailField(blank=True, max_length=254, verbose_name='email address')),
                ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
                ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
                ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
                ('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.group', verbose_name='groups')),
                ('user_permissions', models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.permission', verbose_name='user permissions')),
            ],
            options={
                'verbose_name': 'user',
                'verbose_name_plural': 'users',
                'abstract': False,
            },
            managers=[
                ('objects', django.contrib.auth.models.UserManager()),
            ],
        ),
        migrations.AlterField(
            model_name='char_script',
            name='user',
            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
        ),
    ]

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, fb_app, sessions  
Traceback (most recent call last):
  File "C:\Users\ireba\fb_players\manage.py", line 22, in <module>   
    main()
  File "C:\Users\ireba\fb_players\manage.py", line 18, in main       
    execute_from_command_line(sys.argv)
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\base.py", line 412, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\base.py", line 458, in execute    
    output = self.handle(*args, **options)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\base.py", line 106, in wrapper    
    res = handle_func(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\core\management\commands\migrate.py", line 302, in handle
    pre_migrate_apps = pre_migrate_state.apps
                       ^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\utils\functional.py", line 47, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\db\migrations\state.py", line 566, in apps        
    return StateApps(self.real_apps, self.models)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\db\migrations\state.py", line 637, in __init__    
    raise ValueError("\n".join(error.msg for error in errors))       
ValueError: The field admin.LogEntry.user was declared with a lazy reference to 'fb_app.customuser', but app 'fb_app' doesn't provide model 'customuser'.

AUTH_USER_MODEL = 'fb_app.CustomUser'  #fb_appというアプリ

# Register your models here.

from django.contrib import admin
from .models import CustomUser

admin.site.register(CustomUser)

c:/Users/ireba/fb_players/fb_app/admin.py
Traceback (most recent call last):
  File "c:\Users\ireba\fb_players\fb_app\admin.py", line 5, in <module>
    from .models import CustomUser
ImportError: attempted relative import with no known parent package
PS C:\Users\ireba\fb_players> 

# Register your models here.

from django.contrib import admin
from fb_app.models import CustomUser #from .models import CustomUserから変更

admin.site.register(CustomUser)

c:/Users/ireba/fb_players/fb_app/admin.py
Traceback (most recent call last):
  File "c:\Users\ireba\fb_players\fb_app\admin.py", line 5, in <module>
    from fb_app.models import CustomUser
ModuleNotFoundError: No module named 'fb_app'

C:/Users/ireba/AppData/Local/Programs/Python/Python311/python.exe c:/Users/ireba/fb_players/fb_app/models.py
Traceback (most recent call last):
  File "c:\Users\ireba\fb_players\fb_app\models.py", line 1, in <module>
    from django.contrib.auth.models import AbstractUser
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\contrib\auth\models.py", line 3, in <module>      
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\contrib\auth\base_user.py", line 58, in <module>  
    class AbstractBaseUser(models.Model):
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\db\models\base.py", line 129, in __new__
    app_config = apps.get_containing_app_config(module)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\apps\registry.py", line 260, in get_containing_app_config
    self.check_apps_ready()
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\apps\registry.py", line 137, in check_apps_ready  
    settings.INSTALLED_APPS
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\conf\__init__.py", line 89, in __getattr__        
    self._setup(name)
  File "C:\Users\ireba\AppData\Local\Programs\Python\Python311\Lib\site-packages\django\conf\__init__.py", line 69, in _setup
    raise ImproperlyConfigured(
django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.