问题截图
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Performing system checks...
System check identified no issues (0 silenced).
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x10b726d90>
Traceback (most recent call last):
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/loader.py", line 166, in check_key
return self.graph.root_nodes(key[0])[0]
IndexError: list index out of range
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 120, in inner_run
self.check_migrations()
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/core/management/base.py", line 442, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/loader.py", line 226, in build_graph
self.add_external_dependencies(key, migration)
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/loader.py", line 191, in add_external_dependencies
parent = self.check_key(parent, key[0])
File "/Users/zhangbin/py_envs/dailyfresh/lib/python3.7/site-packages/django/db/migrations/loader.py", line 173, in check_key
raise ValueError("Dependency on app with no migrations: %s" % key[0])
ValueError: Dependency on app with no migrations: user
原因；
没有生成迁移文件导致的
解决办法：
执行python manage.py makemigrations命令
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