引发 NodeNotFoundError答案

【问题标题】：Raised NodeNotFoundError引发 NodeNotFoundError
【发布时间】：2020-12-30 23:27:03
【问题描述】：

当我在 herokou 服务器上部署项目时，在迁移时遇到了这个错误。在我的系统中，没有这样的错误，项目运行正常

Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, i
n execute_from_command_line
    utility.execute()
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/__init__.py", line 395, i
n execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/base.py", line 328, in ru
n_from_argv
    self.execute(*args, **cmd_options)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/base.py", line 369, in ex
ecute
    output = self.handle(*args, **options)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/base.py", line 83, in wra
pped
    res = handle_func(*args, **kwargs)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/core/management/commands/migrate.py", lin
e 86, in handle
    executor = MigrationExecutor(connection, self.migration_progress_callback)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/executor.py", line 18, in _
_init__
    self.loader = MigrationLoader(self.connection)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/loader.py", line 49, in __i
nit__
    self.build_graph()
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/loader.py", line 274, in bu
ild_graph
    raise exc
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/loader.py", line 248, in bu
ild_graph
    self.graph.validate_consistency()
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/graph.py", line 195, in val
idate_consistency
    [n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/graph.py", line 195, in <li
stcomp>
    [n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
  File "/app/.heroku/python/lib/python3.7/site-packages/django/db/migrations/graph.py", line 58, in rais
e_error
    raise NodeNotFoundError(self.error_message, self.key, origin=self.origin)
django.db.migrations.exceptions.NodeNotFoundError: Migration account.0001_initial dependencies reference
 nonexistent parent node ('auth', '0013_auto_20200828_2241')

问题出在哪里？

【问题讨论】：

如消息所示，您尝试应用的迁移取决于系统找不到的另一个迁移。

标签： python django heroku migrate

【解决方案1】：

它说明了错误是什么。您有一个名为“account”的应用，该应用的迁移正在“auth”中寻找迁移 0013_auto_20200828_2241，这是 django 的主要迁移之一。

这可能意味着在您的要求中，您使用的是与本地不同版本的 django。所以你的本地有迁移，而你在 heroku 上安装的没有？

【讨论】：