django.db.migrations.graph.NodeNotFoundError:

Bose Yi

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May 31, 2016, 6:58:55 PM5/31/16

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When new project start, commands makemigrations and runserver get error message. I do not know what I did wrong. I cannot find solution to fix it. Please any suggestion ?

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

System check identified no issues (0 silenced).

Unhandled exception in thread started by <function wrapper at 0x0391B9B0>

Traceback (most recent call last):

File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 229, in wrapper

fn(*args, **kwargs)

File "C:\Python27\lib\site-packages\django\core\management\commands\runserver.py", line 116, in inner_run

self.check_migrations()

File "C:\Python27\lib\site-packages\django\core\management\commands\runserver.py", line 168, in check_migrations

executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])

File "C:\Python27\lib\site-packages\django\db\migrations\executor.py", line 19, in __init__

self.loader = MigrationLoader(self.connection)

File "C:\Python27\lib\site-packages\django\db\migrations\loader.py", line 47, in __init__

self.build_graph()

File "C:\Python27\lib\site-packages\django\db\migrations\loader.py", line 318, in build_graph

_reraise_missing_dependency(migration, parent, e)

File "C:\Python27\lib\site-packages\django\db\migrations\loader.py", line 288, in _reraise_missing_dependency

raise exc

django.db.migrations.graph.NodeNotFoundError: Migration auth.0007_user_following dependencies reference nonexistent parent node (u'account', u'0003_contact')

skerdi

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Dec 22, 2016, 8:33:48 PM12/22/16

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I have the same problem, but with an existing project. I've deleted migrations and the database and shows the same problem.

I have 2+ hours searching but I haven't fixed it.

Collin Anderson

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Dec 23, 2016, 11:27:06 PM12/23/16

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Hi,

Do you want to copy and paste your error message? (I assume it's similar, but it might have some better clues.)

My guess you have a migration that's referencing a migration file that was deleted or something.

Collin

skerdi

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Dec 24, 2016, 6:44:39 AM12/24/16

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I solved it.

The error message is in the previous comment.

When I deleted the database and the migrations, somehow Migration auth.0007_user_following was created or remained (???) and was referencing with the migrate command(creating the database).

I found and deleted it.

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