我正在嘗試UserProfile在我的用戶應(yīng)用程序中創(chuàng)建一個模型，而不是從 繼承models.Model，而是從 django 自己的User模型繼承，以便我擁有一個帶有額外字段的自定義用戶模型。但是當(dāng)我運(yùn)行python manage.py test命令時，它給了我以下錯誤：    Creating test database for alias 'default'...Traceback (most recent call last):  File "manage.py", line 15, in <module>    execute_from_command_line(sys.argv)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line    utility.execute()  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\__init__.py", line 375, in execute    self.fetch_command(subcommand).run_from_argv(self.argv)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\commands\test.py", line 26, in run_from_argv    super().run_from_argv(argv)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\base.py", line 316, in run_from_argv    self.execute(*args, **cmd_options)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\base.py", line 353, in execute    output = self.handle(*args, **options)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\core\management\commands\test.py", line 56, in handle    failures = test_runner.run_tests(test_labels)  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\test\runner.py", line 604, in run_tests    old_config = self.setup_databases()  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\test\runner.py", line 551, in setup_databases    self.parallel, **kwargs  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\test\utils.py", line 174, in setup_databases    serialize=connection.settings_dict.get('TEST', {}).get('SERIALIZE', True),  File "C:\Users\User\AppData\Local\Programs\lib\site-packages\django\db\backends\base\creation.py", line 68, in create_test_db    run_syncdb=True,