当我尝试验证我的模型时，出现以下错误
/usr/local/lib/python2.7/dist-packages/rdflib-4.0.1-py2.7.egg/rdflib/plugin.py:108: UserWarning: Module demo was already imported from /home/ruppesh/gitGnowsys/ishan/gstudio_15June/gnowsys-studio/demo/../demo/__init__.pyc, but /usr/local/lib/python2.7/dist-packages/gnowsys_studio-0.5.dev-py2.7.egg is being added to sys.path
from pkg_resources import iter_entry_points
Traceback (most recent call last):
File "manage.py", line 79, in <module>
execute_manager(settings)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 459, in execute_manager
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 382, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 196, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 232, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 371, in handle
return self.handle_noargs(**options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/validate.py", line 9, in handle_noargs
self.validate(display_num_errors=True)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 266, in validate
num_errors = get_validation_errors(s, app)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/validation.py", line 30, in get_validation_errors
for (app_name, error) in get_app_errors().items():
File "/usr/local/lib/python2.7/dist-packages/django/db/models/loading.py", line 158, in get_app_errors
self._populate()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/loading.py", line 64, in _populate
self.load_app(app_name, True)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/loading.py", line 88, in load_app
models = import_module('.models', app_name)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/usr/local/lib/python2.7/dist-packages/gnowsys_studio-0.5.dev-py2.7.egg/gstudio/models.py", line 3068, in <module>
mptt.register(Metatype, order_insertion_by=['title'])
File "/usr/local/lib/python2.7/dist-packages/django_mptt-0.5.5-py2.7.egg/mptt/__init__.py", line 13, in register
return MPTTModelBase.register(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django_mptt-0.5.5-py2.7.egg/mptt/models.py", line 281, in register
obj = getattr(cls, attr)
File "/usr/local/lib/python2.7/dist-packages/django_tagging-0.3.1-py2.7.egg/tagging/fields.py", line 53, in __get__
return edit_string_for_tags(Tag.objects.usage_for_model(owner))
File "/usr/local/lib/python2.7/dist-packages/django_tagging-0.3.1-py2.7.egg/tagging/models.py", line 147, in usage_for_model
usage = self.usage_for_queryset(queryset, counts, min_count)
File "/usr/local/lib/python2.7/dist-packages/django_tagging-0.3.1-py2.7.egg/tagging/models.py", line 181, in usage_for_queryset
return self._get_usage(queryset.model, counts, min_count, extra_joins, extra_criteria, params)
File "/usr/local/lib/python2.7/dist-packages/django_tagging-0.3.1-py2.7.egg/tagging/models.py", line 106, in _get_usage
'content_type_id': ContentType.objects.get_for_model(model).pk,
File "/usr/local/lib/python2.7/dist-packages/django/contrib/contenttypes/models.py", line 42, in get_for_model
defaults = {'name': smart_unicode(opts.verbose_name_raw)},
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py", line 134, in get_or_create
return self.get_query_set().get_or_create(**kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 445, in get_or_create
return self.get(**lookup), False
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 361, in get
num = len(clone)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 85, in __len__
self._result_cache = list(self.iterator())
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 291, in iterator
for row in compiler.results_iter():
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 763, in results_iter
for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 818, in execute_sql
cursor.execute(sql, params)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py", line 40, in execute
return self.cursor.execute(sql, params)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/sqlite3/base.py", line 344, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.DatabaseError: no such table: django_content_type