我在运行所有django项目的python manage.py runserver时遇到错误。我正在使用django 1.6。
我的项目运行得非常好。然后我在我的虚拟环境中安装了django-subdomains和django-gcm软件包用于某些实现，并且错误开始出现在所有项目中（可能这与错误有关，所以我提到过）。然后我卸载了包，但错误仍然是
我的错误堆栈跟踪是：
Unhandled exception in thread started by <function wrapper at 0xabcddf4>
Traceback (most recent call last):
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
six.reraise(*_exception)
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/__init__.py", line 17, in setup
configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
File "/home/shivam/virtual/venv/local/lib/python2.7/site-packages/django/utils/log.py", line 71, in configure_logging
logging_config_func(logging_settings)
File "/usr/lib/python2.7/logging/config.py", line 777, in dictConfig
dictConfigClass(config).configure()
File "/usr/lib/python2.7/logging/config.py", line 575, in configure
'%r: %s' % (name, e))
ValueError：无法配置处理程序'null'：无法解析'django.utils.log.NullHandler'：没有名为NullHandler的模块