我正在尝试运行长爪钳，但是当我python manage.py migrate遇到错误时。
$python manage.py makemigrations catalog home
Traceback (most recent call last):
File "manage.py", line 11, in <module>
execute_from_command_line(sys.argv)
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/base.py", line 361, in execute
self.check()
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/base.py", line 390, in check
include_deployment_checks=include_deployment_checks,
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/management/base.py", line 377, in _run_checks
return checks.run_checks(**kwargs)
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/checks/registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/x/Documents/Longclaw/lib/python3.7/site-packages/django/core/checks/urls.py", line 13, in …