Use DEFAULT_DB_ALIAS

from django.core.management.base import BaseCommand

from django.core.exceptions import ImproperlyConfigured

from django.db import connections

from django.db import connections, DEFAULT_DB_ALIAS

from django.db.migrations.loader import MigrationLoader

from django.db.migrations.autodetector import MigrationAutodetector, InteractiveMigrationQuestioner

from django.db.migrations.state import ProjectState

        # Load the current graph state. Takes a connection, but it's not used

        # (makemigrations doesn't look at the database state).

        loader = MigrationLoader(connections["default"])

        loader = MigrationLoader(connections[DEFAULT_DB_ALIAS])

        # Detect changes

        autodetector = MigrationAutodetector(