django.db.migrations.exceptions.NodeNotFoundError：运行“python manage.py migrate”时
[英]django.db.migrations.exceptions.NodeNotFoundError: upon running "python manage.py migrate"
问题描述
I have just started a new django project, which is my own blog.
我刚刚开始了一个新的 django 项目，这是我自己的博客。 I ran this command first:我先运行了这个命令：
django-admin startproject mysite
Then:然后：
python manage.py migrate
But, upon running python manage.py migrate , I am getting this error:但是，在运行python manage.py migrate ，我收到此错误：
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 "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
utility.execute()
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 369, in execute
output = self.handle(*args, **options)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\commands\migrate.py", line 86, in handle
executor = MigrationExecutor(connection, self.migration_progress_callback)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\migrations\loader.py", line 49, in __init__
self.build_graph()
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\migrations\loader.py", line 274, in build_graph
raise exc
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\migrations\loader.py", line 248, in build_graph
self.graph.validate_consistency()
File "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\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 "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\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 "C:\Users\Padma Jain\AppData\Local\Programs\Python\Python38\lib\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 auth.0012_user_following dependencies reference nonexistent parent node ('account', '0002_contact')
I haven't even written any code yet.我什至还没有写任何代码。 Then why am I getting this error?那为什么我会收到这个错误？ Please help me out请帮帮我
1 个解决方案
解决方案1
0 2020-10-30 08:51:22
It's probably corrupted file when installing django.安装django时可能是文件损坏了。 Try re-installing your django since that's django's migrations file that is missing.尝试重新安装 django，因为 django 的迁移文件丢失了。
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