Set the DB_DATABASE environment variable

[AbuBaker]

I have installed orator in django
Python 3.9.7
django 4.0.5

I create a migration and model in the root that you can see my code and set connection but when i'm running migrate command orator migrate
then coming these issues

[ImproperlyConfigured]
  Set the DB_DATABASE environment variable
migrate [-c|--config CONFIG] [-d|--database DATABASE] [-p|--path PATH] [-s|--seed] [--seed-path SEED-PATH] [-P|--pretend] [-f|--force]

db connection in the root

from orator import DatabaseManager, Schema
import environ
env = environ.Env()
environ.Env.read_env()

databases = {
    'mysql': {
        'driver': 'mysql',
        'host': 'localhost',
        'database':  env('DB_DATABASE'),
        'user': env('DB_USERNAME'),
        'password': env('DB_PASSWORD'),
        'prefix': ''
    }
}
db = DatabaseManager(databases)
schema = Schema(db)

migration file

from orator.migrations import Migration


class CreateProductsable(Migration):

    def up(self):
        """
        Run the migrations.
        """
        with self.schema.create('products') as table:
            table.increments('id')
            table.integer('category_id').unsigned()
            table.timestamps()

            table.foreign('category_id').references('id').on('jobs').on_delete('cascade')

    def down(self):
        """
        Revert the migrations.
        """
        self.schema.drop('products')

model file

from orator import Model


class Product(Model):

    __table__ = 'products'

Please can you help me about this issue where i'm doing mistake . Thanks in advance

[Marco Occhialini]

are you sure that the env('DB_DATABASE´) is returning a non-empty string?