Seahub启动不了，显示如下:
LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at 127.0.0.1:8000 …
Traceback (most recent call last):
File “/home/seafile/seafile-server-6.3.3/seahub/manage.py”, line 10, in
execute_from_command_line(sys.argv)
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/core/management/init.py”, line 364, in execute_from_command_line
utility.execute()
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/core/management/init.py”, line 338, in execute
django.setup()
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/init.py”, line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/apps/registry.py”, line 116, in populate
app_config.ready()
File “/home/seafile/seafile-server-6.3.3/seahub/seahub/base/apps.py”, line 13, in ready
cache.set(‘test_cache’, ‘worked’)
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/core/cache/init.py”, line 99, in getattr
return getattr(caches[DEFAULT_CACHE_ALIAS], name)
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/core/cache/init.py”, line 80, in getitem
cache = _create_cache(alias)
File “/home/seafile/seafile-server-6.3.3/seahub/thirdpart/django/core/cache/init.py”, line 54, in _create_cache
“Could not find backend ‘%s’: %s” % (backend, e))
django.core.cache.backends.base.InvalidCacheBackendError: Could not find backend ‘django_pylibmc.memcached.PyLibMCCache’: No module named django_pylibmc.memcached
Error:Seahub failed to start.
已经运行很久了，都没问题。
请问下是哪儿出的问题？6.3.3版本。