Django 服务器无法运行：无法访问此站点127.0.0.1 拒绝连接

Question

我正在为我的CS50W项目2:Commerce制作一个拍卖网站。当我尝试运行python3 manage.py runserver时。共有6个错误。我知道系统识别了6个错误：

System check identified 6 issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/threading.py", line 1009, in _bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/threading.py", line 946, in run
self._target(*self._args, **self._kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/utils/autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run
self.check_migrations()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/core/management/base.py", line 486, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/loader.py", line 53, in __init__
self.build_graph()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/loader.py", line 259, in build_graph
self.graph.validate_consistency()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/graph.py", line 195, in validate_consistency
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/graph.py", line 195, in <listcomp>
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/django/db/migrations/graph.py", line 58, in raise_error
raise NodeNotFoundError(self.error_message, self.key, origin=self.origin)
django.db.migrations.exceptions.NodeNotFoundError: Migration auctions.0003_auto_20201114_0509 dependencies reference nonexistent parent node ('auctions', '0002_listing')

请帮助

Answer 1

看起来您把迁移搞砸了(可能删除了已经应用的迁移(。

如果你的数据库中没有任何重要的数据，并且可以重新创建数据库，我建议你使用下一个：

1. 删除/创建数据库
2. 删除所有迁移文件(在每个应用程序内的migrations目录中(
3. 重新创建迁移python manage.py makemigrations
4. 应用迁移python manage.py migrate